Pathetic Customer Service

I called Cell C customer care on the 26th August 2015 to blacklist my phone and sim card. The call centre agent I spoke to was Jabulile. After asking me several security questions she confirmed that my phone and sim card was blacklisted. Jabulile confirmed I will receive a reference number. After 3 days of not having received a reference number I called the Call Centre today and spoke to Sibongile who informed me that my phone was never blacklisted!! Reason: I need a IM number.Firstly Cell C have a agent that blatantly **** and clearly do not know Company processes or has any idea of the word Customer service! Then you have Sibongile who thinks she is doing me a favour with her bad attitude! So I have some ***** out there using my phone just because incorrect information was given!! DISGUSTED with the poor service!!