Don't forget that we have contracts. We have fulfilled our part, they will have to fulfil their part.
This is how business is conducted. Don't sit back and blame it all on yourself. What kind of attitude is that? If you'd bought a new car and paid upfront, and then the garage says you won't get it because of tech issues. Will you sit back and say "oh well, I hope I'll learn from this experience."?
NO! THEY WILL FULFIL THEIR %$#@% PART OF THE DEAL!
(or you will demand your money back)