Bad Customer Service

My contract number is *** for the past three weeks I have been requesting for the invoice and statement from July to September so that I can do my claim @work.<br> <br> Ms Thabitha Nkwana -MTN Customer Services has been sending correspondence without checking the subject at hand. For the past two weeks she has been responding but only this week she asked about the contract number that we were discussing. After that she sent me a link to get my invoices without checking that I was registered long time ago.The reason Why I contacted customer service was for MTN to intervene.I am sick and tired of MTN everytime I am always complaining . I thought that the customer service is going to improve but it deroriating everytime.<br> I just need the statement and invoice with MTN Logo how much must I ask for!!!!!! I paid for my account but I am unhappy.