MTN accepts payment via app, but suspends CLIENT !!!!!

MTN cancelled my debit order mandate as a result debit order didnt go off my account, I got an SMS that account was in arrears. I logged into MTN app on 01/09/2024 and made payment using my bank card, got email from MTN and PayGate to advise that payment was successful. Yesterday I got another SMS to say if payment not made that my account would be suspended. I call 135 and spoke to Nelisa Mbombo who advised me that debit order mandate was cancelled. She requested that I email her the proof of payment which I did no response. Today I reached out to MTN on Facebook Messenger they responded that they dont have my payment in their system and I must email POP. Nonetheless I have been suspended yet the money left my account.