Bad service from Ackermans Store

I had bought a cellphone (Nokia) end of March 2024 at Ackermans Mall@Reds, I have been having technical issues that led to the phone not being working, it was sent to the stores for repairs twice and still no luck, on the 3rd attempt, the store lady said she reported the issues for a refund and that was since December 2024 till this February 2025, no positive feedback is given to me, mind you, I was returned back with the phone that is not working and told i will be contact for refund or a new phone.. Everyone I do a follow-up I'm told by the junior staff they are still waiting for authorisation from headoffice, when I call headoffice they say the store has to help and the useless manager from the store still has no idea what's going on and shows no Interest of helping.. Anyone who has such bad experience with Ackermans service, pls share you views especially dealing with such store managers with no interest of knowing what's happening or taking people for granted. I'm really disappointed.