Contact an experienced transportation paralegal (less expensive than a lawyer and at this point, unnecessary ) and have them contact both Peak Logistics and the customer. Don’t let old receivables sit. Unlike wine, they do not get better with age, quite the opposite in fact. Be sure you have all your paperwork in order and correct. Incomplete, ambiguous or incorrect paperwork can scuttle an otherwise straightforward claim for unpaid services. The first 30, 60 or 90 days( your choice), the onus is on the debtor to pay, after that, the responsibility shifts to you to ensure you get what is owed to you.