DO NOT USE THEM
They don't take your number, but rather tell you it will be 5-15 minutes and you should wait outside or in the lobby of your building and watch for them to pull up. This really means you get to stand around in the cold for an hour and they don't show up. If you want to try and call about where they are, then you will have to wait all over again to get through. Save your time by calling one of the other taxi places in town.