Can a creditor garnish more than one paycheck? Also could they take more than I owe?

If there is a garnishment order, a creditor can garnish you for as long as the order lasts. The creditor can renew the order and continue to collect on their judgment. Also, a creditor can garnish any account as long as those accounts do not have social security payments or pension benefits.

A wage garnishment allows a creditor to garnish wages for a 3 month period from your employer. If you have two different jobs, the creditor can have a wage garnishment issued for each employer, and take money out of each check. A garnishment directed to a bank will attach to any account on which your name appears. Whether it is checking or savings is irrelevant. If a creditor ends up receiving more than is owed on the judgment they are required to return the overage. A creditor is entitled to add interest and costs to a judgment, and can add post judgment costs and fees as well.