Cant get hold of accounts Department - NO INVOICES

No invoices are being sent to my e mail address or post pox anymore????. I have tried over and over to get hold of the accounts department but after holding on line for over 40 minutes at a time I can still not get through. We have tried the call back service... Still waiting for a call.<br> <br> What do we need to do to speak to someone????<br> <br> SOMEONE FROM VODACOM ACCOUNTS PLEASE CALL ME ***