Appalled by Telkom services

Good day

I have been sending emails timeously and not getting feedback. I am very appalled by Telkom services.

I purchased an iphone xs in the 1st week of march and from the day I received it did not read the sim card, I then sent back the device 5 days later and was promised a new one, while waiting for the device to be delivered I was charged pro rata for something I didn’t have, the supposedly new device was delivered on the 5th of April however it was the exact same device and the problem with the device was not rectified, im still experiencing the same issue, so Im still unable to utilise the phone.

I am very unhappy with the service I am receiving and no one seems to be helping to sort the issue out, I need this to be prioritized with immediate effect because I will be taking it further if nothing is resolved within the next 3 days