Ackermans do not care about their customers

I'd rate it less than zero if it was an option. I'm really frustrated and disappointed in the service of Ackermans in Gilwell Mall, East London. I bought a Hisense T5 phone in 2018 and a few months later it had a problem with the back button not working, I took the phone back in January the 4th for repairs and they promised that the phone would be ready between 3-4 weeks. I've been waiting since then for it, now its been two months since and whenever I call or visit the store they give excuses. I just want my phone or my money back I need that phone. I've been too patient with them for far too long.