Hi guys. I'm new here and I really need help from all of you.

I have always been keeping a backup of my phone contacts in the form of excel workbook and I want to merge my files together. I wish to keep the old ones and add in the new ones.

I can't be doing them one by one as I have over 300 contacts to be sorted out.

Is there any quick way for me to merge my contacts files together within a few clicks?

Really appreciate your help guys and girls. Thanks lots in advance.