My "best" experience.....
I love cars and I've had a career that has enabled me to indulge my passion wrt to buying (I was going to type within reason, but maybe that's the wrong expression) some gorgeous vehicles.
Anyway....I'd ordered a very lovely German sports car.
I was hugely excited and when I drove to the showroom to pick it up I saw my lovely new car parked in prime position in the showroom (by the doors ready to drive out).
As I walked up to it with a huge smile a male member of the showroom staff walked up to me and said "beautiful, isn't it?".
I said "Yes, it looks amazing, I can't wait to get behind the wheel".
He then said "Oh you're collecting it then? I bet your husband is gutted he couldn't pick it up himself for the first drive". 
My retort "No he's not gutted as it's my car, chosen, spec'd up and paid for me - I'm your customer not a delivery lackey and if you want me ever to buy another I'd suggest you start treating me as such".
He went
and I went to reception and asked for the manager and told him his misogynistic staff were not doing his business any favours.
The car however was fabulous (but I didn't buy my next from that showroom out of principle).