Very frustrated renewed user

Don't like to complain but the Webroot tech support guy that I just spoke with suggested I post this complaint. Last year I bought the Webroot Secure Anywhere software from Best Buy.  I think version 8.  So this year I was prompted to renew my subscription.  I get an email after I had renewed thru Webroot and not Best Buy Assurance (which I didn't know I should have renewed thru Best Buy),  that I needed to uninstall the older version and reinstall.  I just spent WAY too much time trying to find out if I actually had to do this, WHICH I DID NOT, because this years version is the same as last years. Couldn't you add this question to the list of frequently asked questions so that someone else does not have to go thru what I just did. And by the way, not everyone is tech savvy.   I thought I should get the back up cd and was told by Webroot tech support that I didn't need to do this.  So I bought the back up cd for $10 and I didn't even need it.  So why do you sell it?  Everyone is out to make a buck and take advantage of people who don't know any better.  I feel ripped off.  And next year I will not be renewing!!!  VERY FRUSTRATED!