How do I import accounts with multiple contacts?

How do I import accounts with multiple contacts?

I have multiple contacts under one account, sometimes 10 contacts per account.  I cannot figure out how to import these.  Every time I import the contacts, it shows up with 10 accounts of the same name but different contacts. 

How do I sett up the Excel file and map etc??

Please help.  I can't believe I pay for this service but cannot get help.