If you want, you are free to complain to FCC telling them you 'accidentially' signed off your rights to other VRS providers because the installer misled you.
If FCC gets at least 12 of these complaints, they may act to fix Sorenson up for you and 1,000 of these complaints should be the goal to really push FCC to act.
Using your own words, start your complaint with a little background information like:
"I'm a person with a hearing and speech impairment and I benefit a lot from Video Relay Services (VRS) and when I heard that Sorenson was giving out free videophone devices to enable me to communicate with the hearing people using sign language, I could not resist to get one of these free videophone devices so I can communicate through the telephone system using sign language"
Then move onto :
"After getting my free videophone device from Sorenson, I had to sign a paper in which the installer didnt explain throughly that I cant use other VRS providers as a condition to getting this free device from Sorenson"
Add your other complaints like waiting for a long time for an interpreter and other problems you may have had with SorensonVRS service.
And finally cap it off with :
"After seeing other VRS services, some being better than Sorenson, I feel sickened that I have signed off my rights to access these other VRS providers. I wish the installers explained to me in the first place the conditions to getting these free videophone devices from Sorenson. I feel left out while my friends are allowed to hop around different VRS providers.
Can you please investigate this for me? I thought competition is proper and my rights as a consumer has been stiffled by this slick anti-trust trick by Sorenson VRS. Sorenson has nothing on their website that explains the agreement in sign language so how am I supposed to know?"
And sign it with your contact information including the Sorenson VRS number you were given.
Use your own words, be creative in your complaints, its ok to talk bad about Sorenson because youre doing it to improve choices for the other Sorenson VRS 'slaves' who have signed off their rights too.
http://www.fcc.gov/cgb/complaints.html
Richard