Data and Credit being depleted without usage

Good day<br> <br> I would like to complain about mtn because every time I recharge or buy data they keep on disappearing even if I have switched off my data service and not making calls I tried calling their customer care service but with no luck couldn't go through. I have been experiencing this problem after their strike, last week I recharged with R30 and on Saturday I received a message that I have been given 60 minutes to call mtn numbers but funny enough I m left with R13 from the R32 I had in my account and would like to know what happened to my money and data since my mobile data was disabled and I even deleted some of my apps because the last time I became lucky and spoke to one of their consultants he claimed that maybe I subscribed hence I know I didn't and would like to have some answers, now I m suffering and starting to get bored and considering changing to their competitors