Arisk, as others here have mentioned the more info you provide the more it allows people to help you find a reliable provider.
As for possible providers, I'm not sure if you have seen this but Grey County has every provider in the county available on their website
»www.grey.ca/government-administr ··· oviders/
As someone who has had to deal with Everus/Xplorenet on behalf of my mom, I would avoid them unless you have no other choice. I recently got my mom to switch over to Grey Bruce Telecom and she has been very happy thus far.