How can we get paid?

Client owes us money, but is suffering a severe cash flow.

However, he has offered to pay using one of many credit cards, but we gave up our credit card machine some while back as not many clients used this to pay our bills and the yearly cost was making it uneconomical to offer this method of payment

Is there any solution to getting paid without a PDQ machine?

(PS. I have already told client we will accept a "Credit Card" cheque, but he says none of the credit cards he has allows him to issue these cheques)

Thanks