I understand the dilema here, but sometimes things happen out of the customers control. At the very least they need to notify the maker that circumstances have changed as soon as possible.
I had several orders in with a couple makers this year, but had to call/email to cancel (within the first month of a 3-6 month estimated wait) because my job was in jeopardy. On a couple accounts I had knives made after cancellation and have done everything I could to go ahead and buy them. I have just been notified that my employment will most likely be terminated in August, but they will not assure us of this until June. This has forced all my knife buying plans to the back of the bus. All that said, I hope things get better for makers and buyers. Good communication is key. So many people are quick to criticize makers for communication, but need to remember their part in this. No one wants to make anything for no payment.