Hi - my name is XXXXX XXXXX I'm a litigation
attorney. Thanks for your question, but I'm sorry for your trouble.
If your husband only got a bill for the $25 that was due with NO OTHER charges assessed, then that should definitely be all he owes at this point. HOPEFULLY, your husband has the bill to prove that's all he ever got.
Also, the creditor would have to PROVE to the judge that these other expenses were incurred, charged to you and actually represent amounts due under the agreement you have with the rental company. If the company can't validate or prove the charges are proper, then they should not stand.
As an initial mater, your husband could inform them that he's willing to settle the claim, but he wants an itemized list of charges to make sure the charges are correct. If they aren't willing to do that, then it's probably because they know the charges are bogus -- which means they would likely have no way to prove any of this if you went to court.
Thus, how to proceed likely depends on what they provide upon your request for an accounting of the charges.