CONTRACT DEBIT ORDER CHANGED WITHOUT MY CONSENT, DISGUSTING SERVICE

I have a debit order for my home wifi that did not go off on 4th as it was supposed to, I call MTN to inquire and I am informed that my debit order date has changed to the 15th. I was very alarmed knowing that I did not make that change, I asked the call center agent to escalate the call to his superior so I can get some answers as the agent was not able to provide any. The agent told me that he had to create another case and that someone dedicated to my issue would call me back, I got an email while on the call with the agent stating that my case was open and that I would get a response in 48 hours. I just got an email stating that my issue has been resolved when no one has even called? This is happening for the second time where MTN resolves an issues without bothering to get back to me. Is this what your service has come to?