MTN a bunch of idiots

i have had a data contract with mtn and it came to term in December 2014, I have instructed them to migrate the line to prepaid as i am not going to upgrade, I have been communicating via mail with the collections dept as the time of termination i had a payment arrangement, My payment was done and i was told that once the last payment was done the no will go to prepaid. i have never used the sim card since january and today i get and sms stating that my account has been handed to legal for R610.97 For what i dont know coz like i said i never used the sim card i was under the impression that the no was prepaid and when ever i need in the future to use the card i could do so<br> So clearly between collections and billing and retentions they are all a bunch of idiots, because the one does not know what the other is doing. i will not be paying this amount as this is not my fault, in fact MTN should be paying me for my time and calls made.<br> <br>