Bad service-unable to resolve query

Since Saturday night my data and airtime has been depleted for reasons no one can present either than there are background data that is running which is not the case. One agent that I spoke to said she will escalate to the technical department when I followed up with a call today this was not the case, when finally managed to speak to an agent in the technical department there were no background things that were on and I was told to contact the other call center for a URL report and that will just be emailed to me, that has then not been the case was told by the agent in question that need to go to the police station get an affidavit then then only will I be able I get the said report. I finally decided to spend yet more money to get data and airtime after telling MTN that the problem is on their side and them refusing, my airtime which was bough dissapered again and the agents system is down so they can't provide me with the same excuse of "it's coz of background apps" because th data is there now which was bought today but not the airtime.