We regret that we are unable to supply the goods you require.
We regret that we are unable to supply you with the small quantity you require.
We are unable to supply our customers with the products of such poor quality received from you.
If there is a sudden rush for cash, Banks may prove unable to supply it at an affordable price even to creditworthy enterprises.
We have taken due note of your requirements for plumbing and heating supplies, but regret being unable to supply at present.
We thank you for your order sheet of Sep 10th for brown serge, but regret being unable to supply, because prices have risen a lot since we made an offer on August 15th.
