Frustrated without phone

I have bought a phone at Ackermans on 02 February 2018. A few weeks thereafter the phone needed to be taken in for repairs as it was not charging and also the spear was faulty. Basically, battery life was poor (it did not get full when charging and also overheats), has an echo when overheating. Phone was then taken in for fixing and brought back again, still the same. I took it back to Ackermans on 26 March 2018 and was told it would take a week or two, they will phone me to update me. After the time frame they gave me, I started following as they were not updating me. I followed up with my own airtme . The lady I would speak to would tell me that the phone has not come nack as yet and that she will phone me, three attempts she never called back. I then asked to knock off early from work and went to the brach - Shop 1 Stanbest Building Bester street, Nelspruit - to check on the phone. When I got there the same lady that assisted me when I took the phone and when I was doing telephone follow ups told me that she just checked at the back...the phone is lying there and not sent to wherever it is that it must be sent to. This confirms to me that the phone was not sent even the first time I took it there as it came back the same. They say there is nothing they can do about it now but to send the phone. It is a month that the phone is sitting in the branch yet I am told that it was not back.