I AM BEING IGNORED

I have not received my bill for three month <br> I spend roughtly R50 000 per month with Vodacom and have about 45 contracts on my business account with them.<br> I received no bill OCT NOV DEC,<br> I have been constantly emailing and phoning and no-one will help<br> I email and phone daily with no response<br> <br> How much more do I have to spend before you will send me a bill (WHICH I PAY FOR!!!!!)