This thread is entitled "garnishment". That suggests that "they" (the creditor) has a judgment and a writ of garnishment. But OP further confuses the issue by writing that "It was by court. The thing is we gave them permission to take it out of our account".
Which is it? Did the creditor levy on the account or did OP give it authorization to withdraw money monthly?
- If it's the former, the OP can contest the levy in court before the garnished funds are paid over to the creditor.
- If it's the latter, the bank should be contacted and the authorization cancelled. Either that or OP should close the account and open another one. And also ask the court to make the creditor give the money back.