This is unreal to me! I tried to write a check at WalGreens and they said they could not take my check. They gave me a slip with a number to call for Certegy Check Services and they told me that since I wrote a check to Best Buy the day before for an unusual amount (in their minds) that I was not able to write my small check at WalGreens! They said they have that right to decline my check. They also told me that it could happen at any given time to any of the merchants they verify checks for! They don't even verify funds or anything... read full review »