Havent Received Invoices since April 2015

I took a data contract with cell c in April this year as my employer requires me to have internet connection at home so I can be able to work after hours and claim for the data used at the end of each month. I have unfortunately not been unable to submit my claims to employer as cell c has not been sending me invoices from APRIL - OCT 15 but have been debiting my account every month. I have called cell c several times and each time your consultants would promise to send invoices but never do. on the 27th of October cell c debited R1001 from my bank account which is higher than normal, I again called cell c and requested for an invoice and informed the lady that if I don't get the invoice I will have no other option but to go to the bank and reverse the debit order as I have been paying for months but not receiving invoices for me to claim from my employer. <br> I never received anything from cellc only to discover when calling them for the 100th time on the 29th that they had captured my invoices incorrectly on their system. I gave them the correct address and made an arrangement with them that I was going to submit claims for all these months to my employer and pay the outstanding