Blacklisted my cellphone that isn't a Telkom one

I took the phone to a Samsung repair centre and they advised last week that the phone was blacklisted due to bad debt. <br> <br> I was confused as the phone was purchased and not taken via contract. IMEI is ***. I have tried contacting the telkom mobile call centre and the agent had opened up a case number ***0. I received an sms to say that the case is now closed but the phone still doesnt work....response below<br> <br> \Sorry for the late response but they sent your an sms to say as to why they closed the case.<br> The case was closed because with the people from the back office wont be able to assist. The person that actually blacklisted your device will have to unblacklist it