Violated customer and extremely ****ed off

I contacted MTN for a prepaid Itemized billing to claim from my Insurance which is also a company affiliated with MTN ( Mobility 24 hour ) the insurance company cannot pick up calls from my SIM card hence I need the Itemised billing. I spoke with 3 consultants and a Team leader and was given the self help option many time. I told them the option does not work for me as it fails each time. They then said it will be posted to my address and its 7 days later and still nothing. I am a sick asthmatic person and stress is not good for me as I need my new mobile from insurance, I need contact to be made with me urgently by a senior person from MTN or all hell will break loose.