No response after 9days!!!

I have sent numerous mails, made numerous calls and even sent a mail on the MTN website directly, with no response after 9 days. I am a prepaid user, spending between R3000 to R5000 per month on my cellular usage, and all I want, is a 3 months cellular spend to date, invoice. Maybe I should spend this money on another network provide as your response or urgency to customers are zero... perhaps, it’s your policy to have zero tolerance to assisting a client???? Makes me wonder! I just want a 3 months invoice to date, so I can submit to company and claim back my funds please!!!!!!!