Requesting my correct invoice

I have a problem with my renewal invoice for my Sage accounting software. I have emailed numerous times to so many people to assist me with the correct invoice since August. Naidoo Deveshin and others have requested from Radebe Mbalenhle to please send me the correct invoice, as I need to proceed with my work. Radebe Mbalenhle is not interested in providing customer service, only to send out FINAL WARNING! I am tired of asking for assistance and NOT receiving it! I have asked for a supervisors contact details and have again been ignored. Can someone from Sage Pastel PLEASE send me my CORRECT invoice. I need to proceed with work!