MTN sub-standard customer service levels

Sub-standard customer service to say the least!!! Since Aug 2022 & still not resolved my own account!! This morning my husband's service was suspended after we advised MTN on 01 Nov already that we are changing banks. The 01 Dec debit order was submitted to the wrong bank & after several emails to advise MTN to re-submit the debit order to the correct bank. It still hadn't been actioned! On request from MTN a bank letter & ID was also submitted with a form they provided. This was 2 weeks ago! Received a message to apologize for the inconvenience! This morning the service was suspended! Apart from receiving automated reference numbers NO action from MTN! My husband conducts all his business from his phone and now nobody can contact him!!