<human>: So I got an interview at a tech company last week. Long story short I had an interview with them back in June for a sales position, said I would be much better in marketing but they didn't have a position open at the time and they would call me when they did.

Well, they came through on their word and my first interview happened in October. Sadly it was right before Sandy hit (the company is right on wall street) and I didn't hear from them for three weeks. I was about to give up when I got a call in for a second interview.

My second interview lasted about about two hours, give or take. I met with the head of marketing a second time, then the head of sales (I met him back in June) and then I unknowingly spoke with the VP for about an hour before I left. The marketing guy said he would call me at the beginning of the week, but so far it's been radio silence. Should I be worried? Should I call them to check in next week?

Summarize the given text in a few sentences.
<bot>: I've had three interviews in six months with one company. I'm supposed to hear from them by this week on a decision, should I worry or do something if I don't hear from them by Friday?