Worst online processes by MTN

The past 2 months i have noticed a debit order going of my bank account from MTN. I'm not a MTN customer so there should not be any debit order. I visited the Mtn branch in The Grove mall and was told this was because i have an account with them. I then proceeded to ask for the documents to prove i took out a contract with mtn. They said it was done online and there is no documents. How is it possible that a huge institution like MTN does not require proof of ID or bank statements to open an account online. I was told today that they cant provide me with any documents because of the popi act. But i said to mtn but they have my ID no on record so as far as they are concerned they not breaking the popi act because its my information. But the consultants instore was useless to assist me. So i then asked for a contact no for the MTN ***** department and was told there is no way of calling the ***** department. Mtn apparently only has a portal on their internal systems to report *****. I mean really if I'm *****ed i have no way to contact the ***** department. How is that possible. Mtn's processes is so messed up. How can you just give out contracts with no documents or verification. I asked the consultant how is this possible and she said that online department does verification via recording so i asked her what recording does mtn have of me that they can use to verify me and she could not answer me. While i was in the store another customer walked in also saying there is debit orders on his account from mtn and he is not a customer of mtn .So I'm not the only one who has been de*****ed because mtn seems to make it easy for ********* to do this. I need someone from mtn ***** department to contact me please. This is unacceptable. I want to know what the ********* have supp**** you of mine. ***