A Squirrel Ate My Wifi? Internet Problem Persists

I posted yesterday and my WiFi never came back on- I have to post this from school where I have WiFi. The modem was properly plugged in (coaxial cables and all), I even rebooted a few times, and I can't access the chat function here on the website. Please help! Is it the network grid issue previously posted about? Is it possible that the cables outside have been compromised- it sounds silly but last week a squirrel chewed through a cable at my mother's place and took out the WiFi for days. How do I get a technician out to check the cables and/or WiFi if I can't reach the chat function?
Thank you.

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