Unauthorized amount

Last week Monday early morning I received a SMS from MTN that I own R570. I called MTN around 8 to talk to a consultant to ask what the amount is for since my account was debited the normal amount in January (I dont owe anything) the consultant couldn't explain what the amount is for as its not on the invoice and not even on the statement she will investigate the amount next day I receives another sms that MTN will debit into my account and I should have enough fund of the R570 without my authorization or my knowledge (red flag) and I called again to ask can someone please tell me what's this amount is for no one can explain ( in the mean time am getting SMS from MTN that a JAB payment has been set while I don't even know what that means and SMS of Ref numbers I cant even count how many times I received those SMS. I have lost count how times I have called MTN to find out what the amount I was been charged for is for the other consultant told me I requested JAB payment on one of the comments I was shocked, the question is how can I authorize a payment for amount am trying to find out what is it for. There did not get money into my acc on Wednesday my number was suspended I called again same story no one knows the amount is for and the consultant opened my number and they will investigate the amount ( same story as every consultants told me) so now its Thursday MTN try to debit again into my acc same thing happens no money I called the ***** department the consultant could see the amount but no invoice number and she told me its not part of ***** and said I should find out from customer services - no help again. Monday 19/02 I went to MTN store for them to explain to me what's the amount for, the consultant showed me the screen the amount is there but no invoice number (the question is what I'm my been charged for? now the amount has increased to R593) no one can answer that the question Today the 21/02/2024 I wake up my number has been suspended no calls, I cant even make a WhatsApp call (my phone show emergency calls only) so I cant even call MTN for assistance I had to leave my workplace to go to an MTN store same story no one knows the amount is for and the consultant called MTN customer service to assists at this stage am so frustrated I was told a ticket has been logged and it can only be actioned within 72 hours I must give them time.