MTN Rewardsco ********** Contract

At the end of February I got a debit for R1939.85 from MTN. I called the bank to query the debit and the bank told me that I needed to pay R40 to reverse the debit that I hadn't authorized. When I asked the bank to cancel the debit and investigate they referred me to MTN. I called MTN and after speaking to mor e than 5 people I was told that I am a victim of ***** and that an account had been opened by someone with an address in Krugersdorp. I was told to go do an affidavit and submit the affidavit and copy of my ID to the MTN member who would then forward it to their ***** investigations department. I have been asking for feedback on the matter and I haven't received any feedback whether the ********** account has been canceled or not. I also checked for credit inquiries on my credit bureaus profile and I see that a credit inquiry was done by Rewardsco on 2 February 2022. I enquired about an MTN contract on 18 November 2021 and Rewardsco did a credit inquiry then but I never took the contract. I do not understand how someone can open an account when there are many checks that are done like the proof of address as well as employment confirmation. Also proof of income. With all these checks how did someone open open the account and take a contract? I feel that our personal information is not safe with Rewardsco and MTN and that my information has been compromised which can lead to further ********** activities using my personal information.