My account has now been handed over

hi, i have complained about MTN numerous times. they have disconnected my line before..numerous times even when i have paid. due to their strike i couldnt get through to them till today. i know recieve a call from their Lawyers stating that i need to settle my account because im in bad debts. i got an email from Sylvestor Stewart explaining to me why my line has been suspended for 2-3 months. then when i gave him my ref numbers and dates of my payments he then activated my line. now i have been handed over with a ridiculous amount that i have to pay because it is interest accumulated when i did not pay. the first agent i called told me that i am only handed over so that MTN can keep track because of the strike. now i get a call this morning because im in bad debt. this is HIGHLY unfair because this now reflects poorly on my credit record FOR NO REASON!!! My number is ***, ID number is ***. i would like to know what is going on.