Pathetic customer care and billing services

I upgrade my contract with nashua which closed shortly after and my contract was handed over to MTN,i then started noticing the changes in the debits which made me check the statements .It turned out i was billed for a Blackberry social service and an extra 300mb data . I then went to a mtn store at westgate mall and was reffered to MTN HQ in fairlands,upon arrival i met a lady in customer care who i explained my situation and she then lodged a enquiry.<br> <br> She then promised me i would get feedback in about a week(i was there on 2/1/2015).I then made a follow up with her and just to show how unprofessional and confused she was she called me Arthur and told me she had escalated my query.Today is the 20/02/2015 and still no feedback even though i have sent numerous emails to her.Why is she in customer care if she cant do her job?<br> <br> I then decided to send an email to customer care and all they said was they would get back to me,in frustration i went and reversed the payments to mtn hoping someone from accounts would call me since i had sent an email,still nothing,instead they have barred all out going call and data services and no call!!<br> if it it such a problem why not close my account??