bad resolution of my query

I wrote a review on the default listing i received from MTN and Mondo for a service they never rendered to me. Mondo called and their resolution is to activate a sim card they listed me for ONLY today the sim card got activated, i do not want a sim card activated i want my default listing removed from my credit bureau report and this confirms i never received a service from them and they billed me for it. Please cancel this contract and correct my default listing