How can I remove the little dots on all of my dates on my iPhone?

Ok, so I just got my phone back from Apple. They sent a new one to me to try and fix this. I dont have any events on a lot of my days on my calender, but every day, even weekends, there is a little black dot on the monthly calender indicating that there should be. It starts on May first of 2007, and there is no event that reoccurs every day, or that does not end. Apple couldn’t help. Can some of you please? I use it for work scheduling, and need to be able to see open days, and this messed with me every day. I sync it with outlook express. Thanks for the help.