So I've sort of moved out. I work at a fast food chain so I stay with my grandparents most of the the time as it's much easier to get to work from there. I end up going home to stay for maybe 1 or 2 nights every couple of weeks. I still pay my Mum £75 a fortnight rent but my grandparents refuse to take a single penny from me. They won't even let me contribute a little towards their food shopping. I have considered just getting hold of their bank card before to take their details and send them some money by bank transfer but being a 19 year old part time worker I can't really afford to pay both of them. And I think the reason why they won't take any money from me is because they are aware that I already pay my Mum rent. I don't want it to seem like I don't want to pay any rent at all, I'm just saying that I'd much rather be giving that £150 a month to my grandparents rather than my parents, and I think there's a chance that if I stopped paying my Mum, then my grandparents might accept the money. Any advice?