20|5 fibre account works like dial-up internet

I have uncapped 20|5 fibre account and today i have been trying to stream 4 movies and it times out all the time and keeps buffering at 18kB/sec speed. I wrote an email to support and got no response.

The unfair part is when one is late in payment they dont expect you pay pro-rata [as in pay for the days that remaining in the month]. Maybe i should only pay for the days [during the month] when i get good download speeds and no issues