Phone blacklisted without my knowledge

This network is useless. A stranger blacklisted my phone without my knowledge over 3 months ago. I am made to run from pillar to post requesting unblacklisting and the call centre agents have no idea what they are doing as they all offer different information and none of their fax numbers work. After failing to fax my affidavit, ID etc (to prove the phone is mine and have it unblacklisted) I went to MTN Rosebank Mall, The Zone. The lady said she would email my documents to \headoffice". When I asked for a reference number she said I did not have one and that I should just await a response. It has been over a month now and nobody is contacting me!!!!! I am so sick of having to run up and down over a mistake I didn't even do. My phone is blocked yet the stupid cell number is working. I still don't even understand how a stranger can blacklist a random phone?!? Are there no security checks in place? Then i tweet MTN and they just \""follow\"" me instead of providing a solution! I am so sick of this really."""