Poor communication

I would like to pay my account that has been handed over to the legal department at MTN. I have been phoning in and nobody can assist me. They have given me the account details for ABSA and FNB and told me to use my cellphone number has a reference however it gives me an error stating the reference is incorrect. The number is *** that has been handed over. Please advise as to how i can pay the account. You can contact me on *** or email ***