MTN - no recourse for tripple deduction

Once again I have been caught by MTN. I bought a SIM only Bonanza package December 2023 on MTN website. R99 per month on a month to month basis. This month they deducted the monthly amount 3 times. I tried in vain via e-mail (10 mails sent), whatsapp, calls (at least 10) and in-person to get the duplicate payments reversed. I have been cut off numerous times on my long calls, transferred over and over and no-one knows what I am talking about. In person could not help either. So finally I had to cancel my bank card to avoid further deductions which cost me even more more money. 1. They sell you a product, but there are no after sales help, or contact details to get hold of the correct people to deal with the problem. This is the worst experience, to know no-one is prepared to help. You expect this from ******* companies not a legit company. 2. They deduct monthly amount 3 times in 24 hours and there is no recourse for me to recover this money ******. 3. Their staff are not properly trained and cant assist me with a simple query.

How can you sell a product on your website and no-one in your company is able to pick this up on both your systems?????

I want my money refunded and I want to be compensated for the bank charges in cancelling my debit card.