5 year wait for cancellation of Getmore

I have been trying to deactivate my Getmore monthly service for FIVE YEARS. They have the record (in more ways than 1 I think) on their system. R56 x 60 months is a tidy little packet. I am always assured that it has been cancelled. I did not get a statement for a very long time and was very busy at work. Once I went on pension I made work of it and found I was still paying. Eventually in December I thought I had finally done it, but received 2 sms's (1 said it had been cancelled and the other that they were unable to cancel). Now in March it is still going off. Of course, no mention of a refund although I requested one (as my original request shows on their system) and no apology from the various very bored call centre operators. I have again been assured that it is now cancelled. I will not hold my breath.