In my opinion, DBT does not work for avoidants. Perfect for borderlines, but when you get to the homework that says, call a friend and ask them to go to a movie... Yeah, right. Does not apply.
I tried DBT. (Hey, works for one PD, must work for all of them, right?) and mine was suddenly cut short too, due to funding. They couldn't keep enough people in the group session to make it profitable. It was fine by me, believe me.
I think there are good therapies and good therapists, and then there are not so good ones. You have to be willing to go through a few, not just take the first one that is offered, to make sure you have a good match. It can be done, and even if it doesn't work perfectly, it's good to try.