Agreed.. if they won't respond, file a dispute with the credit card agency and if it shows up, just refuse the package and ups/fedex will return it to them.
Simple. I mix it by the gallon (using distilled agua from Wally World) and store it in my bottling bucket. Lots of items get tossed in there for a few minutes as needed. A funnel, turkey baster (great for the inside of tubing and siphons) and extra airlocks get stored in that bucket.
I generally have been doing 10 gallon batches, once a month. I find that it's way more than I can drink by myself, but I've happily become the guy who always shows up with a couple growlers and that seems to keep the inventory in check.
Yea sounds normal. Depending on yeast strain and temperature, the airlock could keep going for a week or 2, or it could stop after 2 days. Is there still visible activity inside the carboy?