Impossible contract cancellation

I have requested my contract to be cancelled on the 12th of December 2015 and be migrated to prepaid, but this has not been done, even though Autopage informed me that my contract will be cancelled by 16 January 2016. I followed up and requested my contract to be cancelled again, and they informed my that my number will be migrated to prepaid on the 16th of February. Today, to my surprise, I received a sms informing me that my account has AGAIN been credited! <br> <br> I called the call center three times and waited the 30 days period (twice!) to do the cancellation, but to no avail! This is unacceptable customer service and I advise everyone to avoid this service provider - you will save yourself a lot of trouble.