Not happy with the treatment

I bought a phone at Akermans vaal mall sometime last year after few months the phone had problems, took it back to ackermans as it was still under warranty it was in February 2019 when I call Ackermans they said mobicel can check the phone as it had a parten this was in April went to the store and removed the parten I called Ackermans in May spoke to Mitlatsi he said the phone is with Mobicel after a week called mobicel and they said they did not receive they phone, now I decided to make a conference call with both companies and the lady from Ackermans confirmed that the phone is still with them, Ackermans at vaal mall they do not treat their customers fairly they treat you like trash