Account suspended even though paid up in full

My account has been suspended even though paid up in full! My MTN account is paid by debit order off my credit card. Recently my card was used used **********ly. To prevent further unauthorized transactions it was blocked and replaced with b a new card. This also meant that my monthly payment to MTN was not processed as usual. I received a message to regarding this and within 12 hours visited the MTN store where I settled my account in full and updated my new cc details. Yesterday I received a message from MTN that my account was suspended due to non payment. I went straight back to the store (as it’s impossible to reach a human being on any of MTN’s helplines). The consultant checked my account and said that the payment had been received- she was also confused as to why the account had been blocked. She lifted the suspension. Last night I tried to make a call only to receive a message that this was not possible as my account was suspended due to jnon payment. I live an hour away from the nearest MTN store, and cannot go back for another week. Please can ANYONE explain to me what I must do next?? I really not happy - I have been a loyal customer for over 20 years now. It really appears as if MTN couldn’t be bothered and doesn’t care.