Getmore rip-off

I have Getmore on my Cell C contract and tried cancelling this a few years ago - Did not keep reference number and date of call on a safe place, and this is probably the cause why I am still being charged for this service. On 21/02/2019 I decided that I will not let the charge continue any longer and phoned Get more on ***to cancel this and was informed that cancellation will take place in 1 month. My reference number for the call was ********** 80. I received my May 2019 Cell C (Invoice Number: ********** 246) and to my dismay , I saw that I am still being charged for Get more. I cancelled this service because I never use it and feel that I am giving away money unnecessary.I tried to contact Get more today but was told that there was a delay in the cancellations department but a consultant will contact me. I am truly unhappy about this. I am suppose to rely and trust cell c as they are billing me monthly for this. I am a loyal customer of Cell c for years , but when I phoned Cell C a few years ago to enquire about the cancellation I was referred to Get more directly , but Cell C introduce me to Get more?