So I’ve got a similar ongoing issue. I believe in not paying for something without at least being presented with a Pro Forma invoice. As far as I know the law actually stipulates that I’m not liable for payment if I am not given an invoice and statement.
I’ve never received and invoice from the SABC for my licence fee… The first indication I got was a phone call from a collections agency. I insisted on an invoice, and that they remove the interest portion, as they can’t charge interest on an amount that has not been invoiced - besides, I didn’t even have the banking details or the reference to use… The collections agency ignored this request, and I got cycled back into the call center pool.
After a couple of rounds with call center agents over a bunch of months, I finally got a statement (no invoice) and banking details. I paid the base amount, but not the interest. A couple of months ago, I started get sms’s from a collections agency again… I’m waiting for their call again now.