You need to get to the bottom of that really man. Either ask the escort that used your name how she knew it, or ask the escort that you told your name to if she shared that info with anyone.
Personally it would not be a big deal for me as I am single and most of my buddies know I enjoy a punt, but there are so many guys in relationships out there whose lives depend on the discression of the escorts. For them, this would certainly ring alarm bells.