My phone lost network on Friday 17 November , Then I called MTN to ask them what the problem with my signal was, then they told me I did a swim swap the same day on Friday which I told them I didn’t, my bank account was compromised as they managed to buy

My phone lost network on Friday 17 November , Then I called MTN to ask them what the problem with my signal was, then they told me I did a swim swap the same day on Friday which I told them I didn’t, my bank account was compromised as they managed to buy airtime for R140 on my banking app and they even borrowed airtime apparently it’s called extra time . Now my question is, is MTN not supposed ask security questions when the customers are doing sim swaps? I feel like there too many loopholes at MTN and that our personal information is being compromised, now I am being told to go to the police station and do an affidavit for the R140 and for the extra time that was not even borrowed by me I am so disappointed with MTN and I really feel like switching to another network.