when will i get my pc back?

my grandma didn't go to best buy to pick up my pc this morning because they're going to repair it tommorow and they claim that they found when they cleaned the hard drive that it didn't have the norton 360 installed on it, so it's supposedly our fault. my grandma did pay an extra $90 dollars to have that shit installed before i got the new pc though, i'm thinking those thieves installed a virus on my pc when she paid the extra money for it and it executed itself in a certain span of time and they had this all planned out. she's going to pick my pc up tommorow and she'll probably end up getting scammed/robbed tommorow and forced to pay the extra money that they're asking for "repairing" the pc this time around. that store is full of assholes if they want to get away with paying to fix a problem that they created in the first place, i don't see how someone can live with themself when they do something like that.
i also need to get someone to hook the pc up after i get it, i hope that i can get the site manager at my apartment to hook it up, i think that she hooked the virus-filled one up when i got it. so we'll see the next time that i blog on the pc at my house..