Blacklisting my phone

I called MTN 7 times just to try and get my phone blacklisted for insurance. <br> <br> First they wanted the IMEI number which they didn't know how to get. I eventually got this. Then I went through their menu which takes a long time and keeps asking for my number over and over again and i ran out of airtime. Then I called I was told the systems where down in Durban and i should recall I might get JHB. WHEN i call JHB i am told i'm calling to early - I should call after 7. I call after 7 then the call center agent drops my call probably by mistake. Eventually I get through and I am told to call after 8. So I eventually call after 8 - i go through the whole process to be told the system has kicked out the agent twice and she needs to transfer me to somebody that can help me - then the phone get dropped again.<br> <br> All I'm asking for is help - I just want a new cellphone I want to blacklist my phone - I really don't want much. Can somebody please help me!!!