I was very disappointed with Hilton's customer ser...

I was very disappointed with Hilton's customer service.
I was given a different room from what I reserved. Because of this problem, I asked for a different room, but I was ignored and given a terrible room. This trip was the worst trip ever experienced. If there were no rooms available, we should have been given an excuse of some sort, but we were ignored.
We sent an email about this problem, however we were not given a reply. We wanted an explanation, apology, etcetera. Because of this, we are very disappointed in Hilton's services.