Local.com Local Corporation Billing forever after cancelation, Internet

We've been trying to stop Local.com from billing us for two years now!

After not getting results from their "Enhanced listing" at $49.99/month for about 9 months, we cancelled the account. Some time later, we noticed they're still billing us. We canceled again - they claimed they had no record of the cancellation.

After a while, we noticed that they're billing us again. We complained and cancelled again. Again, they claimed there was no record of cancellation. We also talked to our credit card company and tried to ensure they will not be able to bill us again. 

Fast forward a year. They're billing us, this time for no services rendered at all. It's like playing a "Whack-a-mole". A conference call with our credit card company and a Local.com representative resulted in Local.com guy claiming again that they don't have a record of cancellation, and then, when confronted with a fact that they don't have a paid ad online for us either, he immediately hung up on us. We'll see if the chargebacks will get them to finally stop.

(I know we were stupid not to simply cancel the card they keep billing, but we do run a busy company, and pay a lot of other people monthly... this would create a major accounting hassle. We still might have to do so - and I'm considering going to a small claims court too.)