Excel

I have a spreadsheet that everytime I sort the data it does the following:

 

adds a blank line

1)erases the border around the last entry

2)changes the sort data from auto to one of the colors I have already specified to sort by ( I have to cut the header row & reinsert to get the information to sort correctly).

3)when I print the document it prints in small font (i am selecting several rows & telling the printer to only print the selection)

 

Any help would be appreciated.