HELP WITH NORTON SECURITY

I hope someone out there can help as I am going nuts with Norton products.  WHY DOES NORTON PROVIDE ANY PRODUCT SUPPORT OR ALLOW ANY CONTACT WITH CUSTOMERS OTHER THAN TAKING YOUR PAYMENT.

 

I want to download Quickbooks but having Norton active stops the download.    As I only have  USB Broadband Internet the download will take more than 1 hour.

 

 My question is, if I download with Norton switrched off for 1 hour will my computer be attacked during thsi time??/

 

Thank you any help

 

Rgerads

 

John