Legal Question in Consumer Law in Georgia

I don't know what "that 3 day grace period her in Georgia" is, other than the myth that some people believe that there is some right to cancel a contract within 3 days. That is false, though surprisingly many people seem to believe it. However, one of the very, very few contracts that does have a specific cancelation period is health club contracts, and the law provides a 7 day right to cancel. You can probably google to find more about it, including the language that should have been in the contract and the method to cancel IF this is a health club contract. Since you did not even provide the terms of the contract you signed, no one can tell you whether it complies with the law. If it does, you might be stuck because apparently you did not read what you signed - that is your fault. You also apparently waited a week after you could have been looking into the issue.

It might be an expensive lesson in contracts, including reading what you sign and assuming that once you sign, you are bound. If you are able to cancel, you are very fortunate.

As Scott noted, there's no such thing as a 3 day grace period. There is no way someone can be "tricked" into signing a contract unless they choose not to read it.

So, as Scott says, unless this is a health club contract, you're stuck, and have learned a valuable lesson - read what you sign.