Access Deleting Members (?)

First I'd like to say I've learned a great deal from all of your posts. I registered today because I'm having the strangest problem.

Let me tell you that I am in no way a programmer, I don't know any code except some basic html. I was asked to take a 2 day class to learn Access (which was a joke) and then build a database for my employer. I think I've accomplished what they need by using every available book I could get my hands on, forums like this, and the help menus.

Our database is very simple. We only have 3 tables, all of which are related by a field we call our "referrer code".

My problem is this -- we've noticed that some (6)of our records are gone. I have no idea why, or when. We run a roadside assistance company. The database keeps track of members. I can't afford for Access to just drop people. The tables are very small, we only have 1,841 members. There isn't any specialized coding, because like I said, I don't know any. I've mostly used wizards to design.

Does anyone have any idea what, if anything, I should look for. I can send or answer any questions that might help you help me.

I would appreciate anything you have to offer -- even if its just a place to read something that might help.