Advice please on approaching a Mum whose son delights in harassing my son

[simiisme]

Any advice on how to handle this gratefully received.
My 15 year old DS has been harassed on and off for years by a lad of the same age.
They were at primary school together. I am friends with the Mum on FBk and she still works at the primary. She has a large family and the rest of her kids are lovely.
This lad spends all day loping around with two side-kicks who laugh at everything he says and does. Cans of cider and/or 'energy drinks' in their hands. He follows my son, shouting his name repeatedly, then cracking up laughing with his horrible mates. Reminds me of Draco with Goyle and Crabbe, although this boy is much less intelligent and witty than Draco.
They followed my DS from a shop on Christmas Eve, usual shouting and sniggering. DS sensibly ignored them and casually walked into another shop to avoid them. Had a browse for about 10 minutes. When he left the shop they were waiting for him and it started again.
DS was shaking with anger when he got home and is seriously pissed off with the situation.
I've come close to telling the ringleader's Mum before. Would you? How would you approach it? They are not at the same school, but I do not want any intervention by me to cause repercussions - the lad knows where we live. Many thanks.

I'm not sure if this would make things better or worse to be honest.

I wouldn't approach the Mother. They're fifteen and this is low level stuff...no violence. If his Mother says anything to him, your DS will never hear the end of how HIS Mother had to intervene.

Do you know any older lads?

Thanks to both of you Doculament and CheapSausages for responding.
It is a dilemma.
Yes, it is low level, but it's wearing him down as it has happened for literally years.
Sadly I don't know any older lads who could have a word.
I've been with DS and witnessed it - bit my tongue at the time so as not to be 'that Mum' who embarrasses their kid and makes things worse.
To be frank, I'd like to punch the shit in the face. Naturally I wouldn't.
We live in a small town, no police here regularly, occasionally PCSOs in the town centre. I hear rumours of other ASBO-worthy behaviour from this lad but he just gets away with it all.

Are they at the same school? If so does this happen at school? Can you ask school to deal with it if this is the case?

I’ve typed about 6 answers and deleted them so far. This is really difficult, but I think the mum is your best first point of call. If she works in a school, she will hopefully be aware of child mental health and what constitutes bullying. Good luck.

What about your son's dad? My dh would go ape and he's very scary. He'd be having a serious chat with them and scare the shit out of them. Anyone you could call to give them a taste of their own medicine? Could you?

I had this with my son and a boy who had previously been in the same class at primary school. When they moved on to different high schools, the other boy started picking on my son when my son was on his own. We live in a small town. So every time I saw this boy with his friends whether in the shop or high street, I would stop and have a chat with him (when he was younger I used to give him lifts to football so knew him well). As a teenager with his mates, he hated it! I'd be asking about school, exams, his sister etc. He would mumble back, on occasion I would mention seeing his mum to catch up. All very friendly. Soon the harassing of my son stopped.

"I've been with DS and witnessed it - bit my tongue at the time"

Gosh. That I wouldn't do. How DARE they. I'd verbally tear a strip off them no hesitation.

Sounds like things can't get worse, you have to ring.

id tell the mother that if she didnt manage to stop her cunt of a son from harrassing and bullying mine, then the police or someone else would have to get involved and deal with it.

What bran said

They're thankfully not at the same school Lonicera so at least he gets some respite there.
It is so difficult Shockers
ourkidmolly - tempting, but dodgy; my DH would probably get in trouble with the police.
Caselgarcia That's a very clever idea. I could do that!
Thanks also, lljkk Branleuse and youarenotkidding
I'm going to try what Caselgarcia said. It will remind him that I know his Mum and could easily contact her without mentioning my DS at all.
Thanks again, everyone xx

Why not say to the mum that this is going on and you don’t want your husband to get involved yet. Ask her what she would suggest. Make sure you say that you’ll update her.

If it was your son you would want to know. The fact the rest of her family are lovely suggests that she generally does a great job with her kids.

Casel’s idea is superb.

Thanks Cauliflower Going to go with Casel's idea - just waiting to bump into him now. Had a quick look at his FBk page too - so now I am even better informed ready for a lovely chat about his life ;)

You are gooooood!