Payday lender flobridge is trying to tack on fees to collect money?

they sent a garnishment to my work and they are honoring it however flobridge is trying to charge me so bs fees such as a garnishment wage fee no where in the contract that i signed did it specify they could charge such fees and they reference Utah code 7-15-1 however nothing applies to the type of collection they are using its only for litigation can they collect up to five hundred dollars and i call them and the supervisor from the garnishment department tells me sorry she gets the final say and she wont waive the fee and that its in the contract which its not she wont return my calls and i cant talk to her manager because she doesn't have one which i find that hard to belive i dont know what to do now if the wanted to charge me 1000 dollars what it is ok then?