Regency Dry Cleaning Service

I had garments dry cleaned here about three times. The first couple times, everything was well cleaned and was ready on time. The dry cleaning is not done in-​house, but sent elsewhere.
The final time I brought clothes here, I picked them up, brought them home, and put them away. It was not until a week and a half later that my husband put on one of the garments — an expensive gray heathered wool sweater — and noticed that there were traces of red or pink dye in several spots, each one 8−10″ wide. My guess was that the sweater had been dry cleaned next to a red garment, and the dye transferred. I brought it back to Regency to show them what had happened.
I made sure to be polite and understanding, as it was clearly a mistake and was not done on purpose, but I did want a refund (they really should have paid for the cost of the sweater, but I knew that was a long shot; I would have settled for a refund of the cleaning cost).
The man working there immediately got defensive and said that the damage could not possibly have occurred during cleaning. He first said that we must have spilled wine on the sweater. When I said it had not been worn, he said that it must have been a defect in the wool yarn itself, which is preposterous (wool does not spontaneously change from gray to pink, and besides, the color did not follow the knit of the yarn, it was in spots). When I said that it must have been dye transfer from another garment, he said that was impossible, because it was «dry» cleaned and was not washed in water. I am fully aware that «dry» cleaning means that garments are not cleaned in water, but a liquid chemical that is still capable of transferring dye between garments. He did call the proprietor of the place that did the actual cleaning, who also accused me of staining the garment myself and trying to blame it on them (it seems that dishonest people are always suspicious of other people being dishonest!).
He finally ran out of excuses, but refused to refund my costs. At the end of the day, I had paid to have a luxury brand-​name sweater rendered unwearable.
When I turned to leave, I realized that the woman waiting behind me was holding a large comforter, in a dry cleaning bag, which she had had cleaned there, and had found some error and brought it back. I was not the only dissatisfied customer!