What happens when a customer cannot pay? October 08, 2019 17:42 If a customer cannot pay an invoice, Thunder Funding will work with you on an individual basis to come up with the most beneficial way to recover the funds. Contact Thunder Funding for more details. Related articles What is factoring? Do I have to be an established business to factor? What is the difference between membership plans? Who is TransCredit? Does Thunder Funding factor Chapter 11 Companies?