Dropping a seat post into the frame and getting it stuck is somewhat common, and we're sorry for this. We are working on a few ways to try to prevent this from happening.
And... it's happened to all of us.
You have probably tried the correct solution, but without results.
Let's try it again.
1. Turn the bike over. Make sure that it is protected from being damaged.
2. Put a towel over the bottom bracket. Using a rubber mallet or a block of wood and regular hammer, strike the bottom bracket (the area where the serial number is).
3. We know that you have already done this, and the seat post didn't budge. We wish there was a better way or some industry trick, but the only answer is to just keep trying. It will eventually come out. If you take the bike to a bike shop, they will follow the same procedure, but they will keep going until the seat post slides out.
4. One more strategy is to try to hook the seat post with a coat hanger or similar device.
5. This may take a while. We wish that we could offer better advice than "keep going, you can do it!" but this is just one of those times where sheer grit and tenacity is the only way forward.
Also, please give us a call. We'll see if there's anything we can do to get it right.