Before getting my 3GS, I had a 3G with one year left on my contract. When I got my 3GS I had to start a new 2 year contract. When I bought the 3GS the AT&T rep said I had 30 days to return the phone if I didn't like it. So... What will happen if I return my 3GS within 30 days? Will I return to my previous one year contract? Will they cancel my new 2 year contract?