Wells Fargo & Company Bank Account Or Service Complaint

Wells Fargo & Company Bank account or service department,

Checking account Making/receiving payments, sending money New York

My business wrote a check to our wholesaler - - on -/-/16 for $44000.00. The check took a while to clear, and because of the - - holiday we thought it just got hung up. On -/-/16, the check was cashed but not by the intended payee. We called - and they confirmed they did n't receive check number - for $44000.00. We immediately called - to let them know of this. We were told to have - fill out an affidavit claiming they did n't receive the check. The check was cashed in a Wells Fargo bank account number -, - Illinois box number -. It 's been over one month and we still had no response from either back except it in Wells Fargo hand. We are not sure who cashed the check, if it was stolen out of the us mail, etc but it 's a large amount of money for A small business to be out. Please advise me on our next step. Thanks!