Getmore problems

So in October last year we upgraded my mom's Cell C contract and asked them to remove Getmore as it doesn't benefit an 81 year old woman on pension. We finally got through to Getmore they said it would be cancelled within 30 days. It's now the end of February and we are still getting charged . I called Getmore yesterday only to be told that my mother gave permission to keep it going. This is after strict instructions from myself to Cell C and Getmore that any communication needs to go through me. I am legally in charge of all my mom's affairs. My contact number is even the primary number. But yet they don't care what you say. They still contacted my 81 year old mother who is not of sound and mine and can't hear on the phone 2 minutes after they 1st call me and I tell the getmore consultant we are NOT interested. This is actually disgusting how Getmore as a company can prey on the elderly. We have the contact to ensure my mom has a phone for emergencies not for a company to exploit.