Format ph. numbers in .CSV file to take out ( ) so look same

Some of the numbers in my csv file with only phone numbers look like; "(111)--111-1111" and some look like; "111-111-1111" Well the software I am uploading the csv phone number file data into requires that the phone numbers are all the same format. Is there a command or function or rule format we can tell the .CSV document to follow to get all the lines to follow the same format style so I can succesfully upload my files to my software? Thank u for trying to help, Barry