Can not get any service via the call Centre number not the mail addresses

Trying to get through to the call Centre to rectify an error on my home loan account , but I hold on in excess of 15 minutes , only to be transferred from pillar to post and then get cut off.

I have recharged airtime 3 times and still cannot get any service , I have mailed the appropriate departments and get an automated response.

I have recently purchased a new home and it was registered on the 27th of October , but I have been debited on the 1st of November which is incorrect and needs to be changed.

This is impacting negatively on my credit score and is resulting in other debits not going through.

Very frustrating