Ridiculous service ever

Worst service provider you can ever find in the world, requested for contract cancellation for the past 6months and was told that my cancellation was successful, but tried to do a sim swap at Vodacom and was told that my number is still under rmcs, and required for an authority letter that will take a year and half to be sent worse thing I have cancelled my edgars account a few months ago. We lose phones through traumatic experience and RMCS is not doing anything to help us