Speedtests Show Cox NOt Able to Deliver What is Paid for!

I have taken multiple speedtests daily and I have never received the speed I pay for and sometimes it's not even a third of it!  
I ask for credit since the issue apparently can't be fixed and nothing.
I am getting late charges as I did not pay the full bill - even though you say you are working with people and not attaching late charges during this time.

All I want is credit on my account to reflect that I am not even getting half of the service I am paying for!

You also blocked me on your Facebook page because I was advising others to do the speedtests and screenshot them.

Anyone else having these issues?