Refund

Hi my name is thulani bathembu i bought a premio S85 cell phone on the 25 of june 2022 at ackermans in richmond KZN,The phone only lasted 3 weeks after that it just went off does not want to switch on then i decided to take it back to the store and i signed a device inspection form they told me they will sent it for repairs and it will take 3 to 4 weeks for it to be done repairs.I went to check several times as they told me on the 20th of july 2022 the phone is ready and they are waiting for the courier to deliver it by 22nd of july 2022 when i went there to the store to pick my phone they told me another story that the phone is with the courier company i must come back on the 27 july 2022 it will be on store again when i got there they told me another story and i cant wait any longer as i am struggling with out a phone please assist me on this matter or they must give my money back because the phone seems to have a factory fault very disappointed with their service.