Pathetic service

Not very happy with the service I received from MTN. I recently moved from Vereeniging to Upington and to my surprise my LTE wifi sim dit not work. I went to the branch in Upington and the lady informed me that I needed to contact 135 to be assisted. I went hom and tried that and only got operator as there was no option for my query. I emailed customer service and they told me that I need to go back to the branch and update my address. I went back to the branch and the same lady assisted me again. She informed me that there is no coverage for the LTE sim at the current address and that I need to cancel the contract and would have to pay a fee of R1700 for me to cancel. I refuse to pay that amount and she again informed me to contact 135. I emailed customer service again and was informed if I do not pay my account will go into arrears. So how do I pay for something that I can not use or how do a pay a cancelation fee for a problem that I did not create. MYN is a very big service provider and I would expect better service from them. I have used them for years and have more than 1 contract with them, but I think it is time to cut all my ties with them. Never have I ever received such pathetic service from them.