Furious Customer????

I purchased a premio Axebcellphone at Ackermans East London Terminus & Caxton strt on the 22 February 2019. The phone screenbcolour changed on the 19 March, not even a month after purchasing. Screen colour was odd and very dark. Eventually i got chance to go in store and book for repairs 3 May. I called the store today to find out whats happening with my phone and how much longer it would take cz originally i was told 2-3 weeks when i booked it. The lady i spoke to now said they only going to give it to technicians tomorrow and i will receive it next week or the week after next!!! Its already been 2 weeks!!! This is ridiculous. I want my money back cos when i bought the phone they did not explain that repairs take 4weeks!!!!!! So Ridiculous. Will not support ackermans ever again