Mobile Overcharge b/c of Internet Outage

In July, there was an internet outage in my area. The outage was fixed a few hours later, but our modem could not reset properly and we didn’t get service back. I tried fixing the problem on my end for hours, and it was hours before I could reach a customer service rep. He was able to restart our modem, but we were without internet for around 36 hours. 

When the outage happened, all of our devices switched over to cellular data. I must have internet access for a health-related issue and we were forced to use cellular data. We pay by the gig, and have now received a bill for $339! If we had an Unlimited plan for that month, we would only have paid around $100.

I called Xfinity mobile and they said it was an internet issue and that they could do nothing. I am more than willing to pay for an unlimited plan for that month (even though the issue wasn’t my fault) but I am now being punished with a bill more than 3x that price. 

My husband and I are senior citizens who live on Social Security and this will have a major impact on us.