I had a similar thing when I bought my last computer…they were so desperate to get me to buy whatever AV it was that they were pedalling at the time. Told me that all those that put free AVs on the machines came back to get them fixed…and apparently (as a sales person) they had been “trained” about the free AVs and how bad they were…

It got to the point where the only way I could make him shut up is let him give it to me for free…and it is still sitting here unwrapped…and that wont change any time soon…

Bear in mind that for every AV that they deal with, which is sold, they get a commision or something along those lines…so they will do anything to get you to buy…