This is the life of small business dealing with big business.
I've consulted to big businesses that made it a rule to defer as long as they could paying their suppliers, their small business suppliers. (Never did it to their phone company or the like.) Not because they were strapped for cash, but because they could. I guess it meant they had a pool of spare cash waiting to pay small businesses sitting around that they could take to the casino each... sorry, I mean take to the short-term money market each month.