The number of records that is the table shows in .dbf file is not match with the real number of records

I have some .dbf files made in VFP. I have to work with them and occasionally edit it. Recently I noticed that one of .dbf`s is running in a wrong way. The number of records that is the table shows is not match with the real number of records. I have tried to modify the header of this table to reflect an estimated number of records but with no result. How can I get my origin files back?