If you filed a bankruptcy, most debts are discharged during the bankruptcy.
Only a few debts can survive such a filing.
First, check with the lawyer that did your bankruptcy.
See if this debt should have survived the bankruptcy, your lawyer will be able to say.
As for the fees, they appear to be illegal in your state.
You need to contact the Department of Labor in Alabama.
Your state protects you against fees from the employer, and also for being fired for garnishments.
That might come next.
http://smallbusiness.chron.com/can-employer-charge-wage-garnishments-37176.html
Several states' laws have no provision for any garnishment fees to be charged, either to the employee or creditor.
These states include:
Alabama, Colorado, Connecticut, Delaware, Hawaii, Idaho, Iowa, Kentucky, Maryland, Massachusetts, Mississippi, Montana, Nebraska, New Hampshire, New York, South Carolina, West Virginia and Wyoming.
A few states only allow fees for specific types of garnishments: Alaska, only for student loan garnishments; North Carolina, only for public hospital debts; Pennsylvania, only for landlord garnishments; and Tennessee, only for garnishments against state employees.
You can read this:
http://www.nolo.com/legal-encyclopedia/alabama-wage-garnishment-laws.html