RMCS Jet and Edgars airtime services the **********.

I don't have a jet nor Edgars account but this RMCS keep on giving me airtime and changing my sim card from prepaid to contact without my consent. I don't understand how do they bill me. I want to blacklist my ****** phone and do a sim swap and all they can do is to send me from pillar to post. Is been almost a week now been disconnected becouse of them. This RMCS is a *********. They changed my sim to contract without my consent. Something should be done to them