DSTV GET YOUR FACTS RIGHT

I requested two dstv subs to be connected in January. I emailed DSTV the serial numbers etc. Now they have sent me a bill for 5 DSTV subs. I did not sign up for 5. Where are the other 3 serial numbers? They cannot connect me without serial numbers. I have emails to prove that I only requested two dstv to be connected. Now they slap me with a bill of R2000! This is not acceptable. I previously had dstv and disconnected due to issues with their accounts. I use netflix in my b&b however some guests wish to watch sport therefore I chose to connect two.