My son is 11 and he has a debit card gets £15 pocket money every month. I have just found out that my son's friends are making him pay for things when they go out. Just a drink here and there, but recently one of the boys wanted a bag which £18 and asked my son to pay on his debit card and then only gave him £10 back. I don't think it's right that he should be paying for his friends. Should I message the other boy's mum and ask for the £8 back?