MTN bad customer service

On the 27th January 2022, I when to mtn in Rosebank mall to inquiry on taking up a new contract phone and was assisted by Lehlohonolo Sithebe and she showed me what they have and I liked the Huawei nova 8i. I had to go as I was running late and did not take the phone but she went on and completed the application and activated the contract with out me agreeing that I will be taking the phone and with out my signature. I found out about what she did when I received my statement and on 21/02/2022 I then went back to the shop to find out what she had done and I was assisted by Hlolohelo Mohapi and she said she is the reginal manager and Lehlohonolo Sithebe is on her day off. Hlolohelo had promised me that she will speak to lehlohonolo the next day as she will be in then get back to me but she did not and I then called her on the 25th/02/2022 and she said they will process a cancelation and the shop will be liable for all the cancelation fees and she will have Lehlohonolo send me a confirmation of all that they will done to resolve this on email but she never did send me that email. On the 28/02/2022 I called Hlolohelo and she did not answer then called the shop and the was no answer there too till today I have been calling both the shop and the reginal manager to have this resolved but it is still not yet resolved as the sometime answer and tell me they will follow-up and get back to me of which they never do then I will have to call again and they sometimes don't even answer my calls or they get some of the colleges to tell me they are busy and they will call me back.