*******ly approved a cell phone contract on my name to a person unknown to me

A few months ago I received a call from someone claiming to be from MTN and they followingvup on an outstanding account. I asked for info. I told this person I do not have a cell phone account. I ambon prepaid and have no intention of having a cell phone account. He then told me to come into the store to sort it out. I told him the village I live in has no cell phone outlet let alone MTN. He hhen told me to meet them half and go to the nearest store to sort it out. The nearest store is in a city away from where we live and I told him to sort it out because they allowed this account to be opened on my name without verification. I now receive a letter of demand. This is certainly going to have an adverse reflection on my credit score. Another thing this is in violation of the POPI Act as MTN allowed my credentials to be used without my knowledge. If this is not rectified I will be contacting the consumer council. I also want any adverse report on my credit record to be rectified and I want it to be done soonest. If this is not done I will also br opening a ******** case at the police station and I will post that case number here