How do I deal with a bad tailoring job?

I have a regular tailor and recently brought several items to be fixed. The quality came out less than I’m used to, and I’m especially upset over two pairs of expensive jeans that were hemmed too short. Because of the way they were hemmed, they cannot be lengthened. Do I have any recourse here? When I went to pick up my stuff I didn’t have the boots I had tried on with the pants, but when I tried them at home they were indeed shorter than we had talked about and shorter than he had measured. Since it’s the holiday season I know he has hired extra workers, and I think this is why the quality is not what I have come to expect from him. There were also other things that just seemed off, like crooked seams, mis-matched thread, etc. I sew myself, but bring my important jobs to a tailor. I’m disappointed.