Do your clients thank you?

I am new to the service. I did multiple drop ins for a client and felt like I went above and beyond for them. I did extra tasks in the home they asked for. We had a huge snowstorm and they live on a giant hill on back roads and I made it every day even though they thought I wouldn’t. I told them I would walk up the hill if I needed to. I know I agreed to the job and I of course realize that implies that I show up. The weather was unexpected and severe. After, I sent my last update, telling them how much I enjoyed caring for their dogs. They never said thank you or responded at all. I can’t help but feel like that’s rude. Does this happen often?