Customer service, where did it go? (hushards rv)

About three weeks ago now I called Hushard's RV  in Hilton NY, and ordered a frame rail kit for my fifth wheel hitch for my new truck. They said it would usually come in, in a few days. Well after a week I called and they said, we haven't heard anything yet, but we will call you when we do. The next week, I called again and they said, still nothing, but we get a shipment in tomorrow. Still nothing. they call me today and say, our supplier says it won't be in until august 6th at the earliest. Do you want to cancel this order, and call around and see if someone else has it? EXCUSE ME, but shouldn't YOU be calling around and see if you can find one? I am a regular customer of this dealership, and quite frankly am majorly disappointed. (hence this rant)