No service at all!

I have been struggling for 3 months to resolve a billing issue. My business contract is invoiced in my personal name, and I cannot claim VAT on these invoices. I have send numerous emails and receive read receipts and automated responses, but no service at all! I have also noticed a huge decline in signal quality on the Vodacom network over the past couple of months. If anyone is considering a new mobile service provider, please spare yourself endless frustration and do not consider Vodacom. I will surely move my contracts at the fist opportunity.