Extremely POOR Service

On May 8 2015 @ 10:46AM I requested for my line *** to be moved to prepaid as it had expired in April. At this time I was in hospital and sent an email to customer care. My request was never actioned and was only done in February 2016. On 11 December 2015 @ 13:16PM I requested for my VAS to be removed on my voice line ***, Insurance and 2x 1GB data bundles. 1 data bundle was charged @ R149 p/m while the other @ R160 p/m. The VAS was only removed in Feb 2016.<br> <br> I requested a credit for the months that I was billed for *** and for the VAS charges on *** which I was charged for in January and February. I was told that I will have feedback after 7 days and retentions would be incontact with me. It has been more than 3 weeks and I still have no feedback. Today I requested for an update and my *** number was moved to prepaid without my request. MTN sent an sms that my account is now overdue, if i don't rectify then it will be locked. What abut my query? is this really the kind of service MTN offers?