Blacklisting

I have been trying to blacklist my ****** device since Wednesday. Telkom call center consultants are clueless on their daily operations. I spoke to 5 if not 6 consultants to resorting to their supervisor Lerato who said I cant be assisted I shouldnt come to Telkom for a solution. I regret porting from Mtn. I have been using my main telkom sim when my device got lost and another telkom data sim. To my surprise i am a cell c customer. To me its clear that the ***** registered his number to cell c under my Imei ,meaning I dont know the cellphone number and therefore I cannot block it.

Once and IF this query gets resolved I'm porting to a diff network. No service. Supervisor not assistance friendly. This is not even my first encounter. I am deeply disappointed with this service provider. Telkom outlets doesnt assist with blacklisting.