Hi,
I'm having a horrendous time, would really appreciate some advice on the matter.
I'm 6 months pregnant, Im absolutely stressed out to the point where I've been sick and had to have a lie down 
I'm close to my mum and dad, immediate family situation is great and we're all very close. However, my uncle and aunt (mums brother and sister) have been particularly challenging over the last few years.
I've had no contact with uncle, he is a heavy drug user, violent and seems to target my vulnerable disabled mum. He will turn up at her house for money etc. He has assaulted her in the past. Haven't spoken to him in 2 years.
Aunt is an alcoholic, equally as violent and her adult (late teens) daughter lives with my mum as a result of their broken relationship.
In December, Aunt didn't want to spend Christmas with uncle as she knew it would upset her daughter as they usually take to binge drinking and fighting. (This has nothing to do with me, I spend no time with them at all never mind christmas)
Out of the blue, uncle gets hold of my number and beings to send me abusive and horrendous messages. Accusing me of vile things and threatening to spread lies about me over social media, there was never any explanation why. He then sent me a messages apologising for the lies and vile texts, said "there is a snake in the family and I wanted to catch them out"
I blocked him after the first few messages came through. He was blocked on all forms of social media and I assumed he had no way of contacting me.
He then contacts me via a different number, mentioning more lies and randomly threatening to kill my dad. I have no idea why.
He isn't let it lie. I have no idea why it's happening but he is a particularly vile man and I'm scared of him coming to my house or my mums house.
However, my mum has said she doesn't want the police involved as she can't handle the stress?! (Has a heart condition)
Am AIBU to call the police? Is this even a police matter?
I've done everything I can to avoid these people yet they're making my life hell.
Sorry for the long post. I'm just so sad, I can't believe I'm being attacked for no reason and I just don't know what to do