Contract Cancellation- Ref No ***

My contract with Vodacom expired on 12 December 2015 but they still debited my bank account end of January 2016. When I called to enquire I was told that I didn't call them to cancel so I am on a month to month contract which was a surprise to me because end of contract means exactly that.<br> <br> However, I then asked them to cancel my contract and I was advised that it is scheduled to be done on 29th Jan 16 and I should switch off my phone for the whole day for it be done successfully. I did exactly, but to my surprise on the 30th Jan in the morning when I switched my phone on, I had no network whatsoever, although I had data bundles. So I call them again, only to be told a different story this time, \I must go rica my sim card\"! This was never told to me to start with and when I ported to contract, I was on prepaid! This is so disappointing for a big company like this one:("