How do you guys deal with delays?

[427gt500E]

I'm very frustrated right now guys and I guess I need to vent a bit.My Kama Kaase pro touring Mustang was supposed to be finished May 31st.I signed the contact September 1st 2009 and the builder said there was no problem with having the car finished within the contract date.It's clearly obvious the car will not be completed on time.

A few days ago I told them they better have the car finished by June 30th and they agreed.Now they tell me they need more time and promise to have it to me by July 31st.

Now I know it takes time to build a car from ground up and they have alot of builds going on but it still pisses me off.I don't want to rush them and get a poor quality job.

So what do I do? Just sit back and say ok,no problem,when ever it's finished is ok? How would you guys handle this?