Lawyer fees should be issued by a law firm. For some reasons, a receipt is required, and there should also be a receipt stamped by the lawyer. However, in any case, a copy should be given to you immediately after the contract is signed. This is Must.
If there is a problem with the lawyer you hired, it is recommended that you collect evidence of payment and then go to that law firm to handle it. If it is a fake lawyer, you may consider reporting the case to the police.