So how much is Showmax really?

It's month three of my subscription to Showmax. So far I have been billed R99, R94 and now this month a whopping R140 - and the amount has already been deducted from my paypal account. As far as I can see the dollar amount has remained $7.99. However, the Rand hasn't fluctuated that wildly over these three months. Showmax, please bill your customers in Rand or at least notify us if there's a whopping 40% increase in one month. Above all please don't advertise your service at R99 if that's not the price. I have just checked and you give no indication on the Web of your 40% increase. No, not cool at all.