Paid for no service

My contract came to an end on the 30 th of December 2017 which I received an sms confirmation regarding the cancellation as my contract term had ended. At the time I had 133 minutes that I had already paid for and was supposed to receive and additional 100 minutes,100 sms and 100 MB data. My tariff plan was changed to supacharge plan,which I still have my remaining sms'es; however I have lost my 133 minutes and didn't receive the additional monthly minutes and data that I have paid for. My debit order went off on the 27th of December 2017. I have been trying to get in touch with the cancellation department for days now and I'm unable to go through as the call keeps cutting whenever I'm told I'm being transferred to the department. I have asked to be sms'ed the direct number but that too I'm not getting. Basically CellC has ****** my money as I have paid for a service I'm not getting. I want my services or my money back simple. This is the same reason why I didn't want to renew my contract with them due to countless bad service and experience I have with CellC. Never again will I have any dealings with them.