Xfinity blocking payments

Xfinity has made it impossible for me to pay my bill. I just want it on record that my payment is in the mail and I have since filed a complaint with the FCC.

This is very upsetting because I had only just settled a complaint filed with the Better Business Bureau. 

After making multiple attempts to pay my bill, even getting assistance from an Xfinity technician, it has become clear that it is my payments specifically that are being blocked.

This was made apparent when an Xfinity technician was able to make a payment to his personal account using my phone and the same methods we used to try to pay my bill but was unable to pay my bill.

We traveled to an Xfinity store and they attempted to pay my bill and each card we used to pay my bill was denied. Even the Xfinity technician who was trying to help me attempted to make a payment which was denied. He made a purchase right after to ensure his card was still working and was successful.

I'm just trying to inform you that my payment for the bill is in the mail. It is insured and I am able to track it so I will know when Xfinity receives it.