I work; and as far as i know someone [probaly the owner] has to be home to sign for it.
Yes, an adult must sign for the rifle. It turned out to be an ordeal but S&W returned my rifle to my place of employment. Another pointed out that he worked at a school so it probably would be a bad idea to do that. It is an option, however.
If I read your post correctly, you took the rifle back on 2/10/10 and the company (a large mail order company) said they would send it on the following Monday (02/15/10) and have not? I'm curious why they would have waited 5 days to send it unless they were waiting for a call tag from S&W. I'm more curious that they've had it 12 days and have not done anything with it!
As Chuck S said, S&W should take care of it but I think I would try to get my money back and try to buy from some outfit that has some customer service skills. There are very few retailers anymore that actually care about the customer but it is apparent that these folks do not.
The key to finding a company attitude is their customer service 800 line. First, if they have one, try to avoid them. If you can't, listen to the "options". If #1 is "If you have a problem with our product, touch 1" then you know they are trying.
If you hear "want to buy something, press #1 and when you finally hear "problem" at about #8, then you know they simply would rather sell something than satisfy a customer.