Sand blasted and painted horse trailer

I took my horse trailer to them for sandblasting, prime and paint. I was quoted as to a turn around time of 3 weeks. It took over 14 weeks. I showed up twice after being told to come and get it and it was still not ready. When I did come pick it up, I was very disappointed. The owners even said that it did not come out the way they had hoped. They gave several excuses as for as the weather and the lighting in the shop. They did not prep the trailer and cover things that I thought they would have. I made a comment about the pads inside the trailer that are there for the horses to lean up against being uncovered when he painted and thus having the spray of the paint on them. The owner answered that he didn't think the horses would mind. I'm not painted the trailer for the horses??? The color did not go on consistently and thus I have patches of darker gray in some places than others. The few areas that he did cover where done so with half the effort. The sign that has the weight of the trailer and other info that I specially said I want covered was covered with one little piece of tape and thus the edges are painted on the sign. Overall a poor job. I cannot speak to his work for smaller items, but given that this was a big job for a high price, I would have expected a better outcome. I painted the trailer because I was embarrassed to drive it, well after 14 weeks of not having a trailer to ride the horses this summer and I am still embarrassed.