surprise cold pack aggravates low back pain

I was receiving a pleasant massage from an RMT for a low back or sacroiliac joint problem. Everything was going well, and I was feeling quite a bit better, when suddenly she put an ice pack directly on my skin. She gave no warning at all, just put it on. It was so startling and unpleasant that my back muscles started to spasm, and all the good she’d done was completely reversed. It was a disaster! Obviously, I never went back there ...