DStv overcharges and blocks if you don't pay their amounts..."Ransomware Company"

My DStv premium subscription bill is always more than it should be (R939). They over quote me every month and then block my the 23rd telling me I owe some abstract amount. I have a scheduled payment on the midnight of the 26th, every month. This month it was R1,023... I have had to phone on four occasions now, and the agents are really not helpful, not to mention I've had to spend over R200 in airtime to stay on calls as it's not toll-free either...yes, I've been on call for a total of 2.5hrs+ in the past 4 days. I got one Reference number: ***9-i109. They say they don't increase the premium, why is R939 then not enough. Are you trying to be politically inclined too? I am so damn glad I don't have a debit order with this business, else they would be deducting from my account every other day until I have nothing left coz my DStv app quotes me different amounts every other day, and I AM PAID UP TO DATE for R939! Idiocracy.