Phone Lost n Vodacome Does Not Give A ****

My phone was lost last week already and I have tried 3 times to have my phone black listed but failed. Vodacom have been asking me the most crazy questions to verify me. They want to know what my airtime balance was before I lost the phone. How the hell should I know that, it's not like I decided to check my balance before I lost the phone. After an argument I was advised to complete a phone and the phone will be blacklisted. I send the form back 3 times via email and no one has done anything. REf: EC-0WYU-2XXVFL, I called you again and was told no information can be given to me. What the hell!! <br> <br> I can confirm my IDnumber and address all these documents you have as part of RICA to verify my identity. Also I have been telling your people that the sim card was not in the phone when it was lost so the sim card is with me and only the devise should be blocked. Can someone with a brain please help me.