Phone went to repairs from last year November till today i have not received it back

Last year on the 16th of November i took my cellphone to ackermans at Letshoho shopping centre for repairs, when I got to the store the checked my phone if maybe my charger had a fault, but the phone was still not working. i left the phone at the store on the 18 of November and i was told that I would be called once my phone was back form repairs. in January i went back to the store to check if my phone was back, and I was told that the phone came back because there was no serial number written on the document, but i asked why they did not inform me that my phone was back. I was then told that the phone would be booked to go to vodacom for repairs, when i went back again to check my phone I was told that my phone came back from vodacom repairs because they don't fix dual-sim phones,on the 19th when I went to check my phone, I was then told that my phone would go to 3G Mobile Reverse Logistics for repairs, from the 19th when I go to the shop to check the progress of the phone, I told that they will log a call, but still there's no tangible feedback, when I ask for the manager they tell don't fix phones and the problem is with 3g mobile logistics.. so currently I don't know what to do because im only left with papers and no feedback from the shop about the progress of my phone and the sad part is that they are taking this issue very lightly