I ordered an TK-22 for T-34 in his on- line store immortalhobbies.com about one weeks ago. But I haven't gotten any message from him. Anyone knows where is he? Does he still do this business?

Yes, he has been very sick with flu here is his response to others looking on other forum:

Just to put this thread to bed so that there are no more comments from the peanut gallery.
I was sick with the flu/cold from Christmas to almost the end of January. OMG the hate mail one gets when items are ordered and immediate service is not rendered. This really upset me as over the past 2 years I have busted my butt to service most people and that would include people that purchased their product elsewhere. Yeah kind of flaky business when someone buys something from X-Y-Z reseller and then comes to me for support because the other guy won't tell him how to use the product.
So I got pissed for a few days and decided to take some time off. So now here is where I sit.
I am NOT going out of business and will in fact have some new products shortly, The changes I will be imposing are
Buy the items from me and your support is free, Buy it from somewhere else and it is $30.00 an hour, minim 1 hour charge just like a garage. I hope I don't have to charge people for this because really I am not trying to punish any patron but I will not be a doormat
or support products from other businesses.
The products I carry and support will be changing as well. True modellers will love some of my planned changes as they will be more model related rather than RC as this is where my passion really is.
My prices are fair, I routinely check sites all over the place and price according to the market. There is no way I will compete on every item and I simply won't do it, its not smart business.
I am on the Eastern Seaboard so my time is EST, calls beyond 8:00 pm at nite or on Sundays will be hung up on. My shipping will change to 2 days a week, not sure if Tuesday and Thursdays will be the days or Tuesdays and Fridays, I have not decided that yet.
I have the need to do this because I am not going to sacrifice my family time for tanks. Kids grow up once and I was recently reminded of that.

This will be posted on my front page and in my terms of use ( which NOBODY ever reads )
I hope folks understand that i want the ability to love RC Tanks and it has been a real chore to care even in the slightest but to be quite frank I am not so sure it really matters to me If I don't sell another piece of tank equipment/Tanks or parts as I would be totally fine with that.