You could always consult the relevant bit in
the guide.
Looks like your only other option is AT&T. Trust me when I tell you that your less sinister choice is who you're already with currently.
It appears Mediacom has 3Mbps service (their "Launch" package) for around $35/month (hard to tell, they hide their prices). 3Mbps is plenty, your only reasonable choice is to opt for the cheaper plan or disconnect if you don't like the current price point, but if you think Mediacom is giving you a hard time, wait until AT&T gets finished with you after a couple years. Make sure you own your own cable modem and router instead of paying them if you aren't already. That's the best option you got in a monopoly/duopoly situation. Don't bother with satellite or mobile broadband, it's no cheaper. Don't use open WiFi if you need secure network access for banking, etc., and sharing with neighbors is almost assuredly against TOS, not to mention legally uneasy for whomever's name is on the bill if the IP address gets flagged in any sort of illegal shenanigans online. Unfortunately, the industry is trying to make internet access a $50/month or higher price point, so you're not too far out of line from the rest of the country. It stinks, but that's 'murrika for you - land of the free and home of the brave.
Phone companies though have to let others use their lines.
Not entirely true across the board. Deregulation was a cluster. YMMV.