Try calling their 800 number and see what they say.
http://www.barronsmag.com/subscription/customer_service.html
E-mail: barrons.service@dowjones.com
Phone: 1-800-544-0422
No. Don't do it. Buy it store bought already built. What you are saying makes no sense because you are saying that you get some parts for half price, but then you will have to spend money to have somebody put it together for you. So it will cost you more money in the long run. Don't build your...
I wouldn't pay them at all. Cancel it all. That letter makes no sense. If you are having this many problems before you open an account, then I'm sure your problems will only get BIGGER after you start trading with them.