Can't pay my bill! Now I have a late fee!

Literally EVERY time I have tried to pay my bill the last four weeks, both through the app AND the website, I have encountered errors and was told "We are experiencing technical difficulties. Please try again later."

Now I'm at risk of my internet service being interrupted, having late fees applied, and I have two months worth of my bill piled up! This is getting out of hand, and I'm honestly not sure I can take care of things in time. Especially since it STILL won't let me log in to pay my bill!

Please, I just want to pay my bill! Someone help!!