First, since you are in ECI, I would talk with a Supervisor and see what the hold up is. Sometimes, the therapists have full schedules and you may have to rearrange your schedule or wait a week or so and see if they have a cancellation. We went thru ECI also, however only had to wait a few weeks. I wanted an OT evaluation, however OT wasn't able to fit us in her schedule and our child turned 3 years old. 6 months is excessive, I would let a Supervisor know that you are frustrated. See if that gets you anywhere. It would save you from having to start all over with another therapy company.
Now, we are with Therapy 2000. At first it took a few weeks to get the evluation and the therapist to come out. The Therapist is great and they do come to your home. There is an office here in Fort Worth, where you can get therapist's from Fort Worth. Therapy 2000 does bill thru your insurance, and we pay the co-pay.