Hi, Sedona,
Congratulations on finishing your camino, I have enjoyed getting news from the Norte, since it's been at least 6 years since I passed that way.
I too have stayed in San Martin Pinario on three different occasions, and I'm sorry that you found the staff to be so rude. My experience has always been very positive, which is not to say that I doubt you at all, just that maybe this was a particularly bad day for the staff.
In any event, once you are back home, I think you should send them an email and let your opinion be known. They have a great business going there, and the management surely doesn't want pilgrims to be upset with the service they provide, especially when the price of bad publicity on a forum like this could be so significant.
I hope this doesn't take the glow off of the rest of your time in Santiago. Enjoy, and congratulations once again! Buen camino, Laurie