ZERO REALLY BAD

I have updated my banking details of which i informed and provided updated details twice to MTN, of which they confirmed it is updated. However they never updated it and did not take their payment no further communication from their side just suspended my account. When i try to resolve this with their compaints department i get ignored for two days. Have to treathen them with ombudsman just to get a response then no assistance regarding the actual complain but to get lectured on my language rather than solving the problem. I use my wifi for work so apologies for my frustration? SECONDLY I HAVE BEEN A CUSTOMER OF MTN FOR YEARS..... Don't use this company please they are so poor with their admin and do not give a damn about their customers.