"One Chinese exporter signed an export contract with Company A from a foreign country. Payment will be made by D/P at 45 days after sight. When the bill of exchange and the documents were sent by the remittance bank to the collection bank in the importer's location, Company A accepted the bill of exchange. After the arrival of the goods at the port of destination, A obtained a trust receipt and borrowed the documents from the collecting bank and took delivery of the goods for resale. When the bill of exchange was due, A became insolvent because of poor management. The collecting bank informed the remitting bank that the drawee rejected the payment and suggested the Chinese exporter to collect the money back directly from Company A.

Question: What should our exporter do under such circumstance?"