they do NOT take emergency calls though, but it might be helpful if it's not a life or death emergency. It takes some getting use to though, if you have questions feel free to pm me.
Also look into seeing if your state provides free relay phones. I live in Florida and I had a voice-over-relay Captel phone. When I would call people I could "hear" their voices and they could hear me respond, but there was an operator from Sprint who would type out what the other person was saying for me and the text appeared on a little screen on the phone. For people to call you using this service they have to dial a 1-800 number, if they call your normal phone number no operator will be on the line (unless you have two phone lines/fax, then you can set it up so they don't have to dial the special number). All of this was provided to me for free by the state. If you have a hearing aid provider or audiologist they may know who to contact.
I find it easier to use i711.com (sprint also has a relay service
www.sprintip.com/index.jsp ) then my voice over phone though.
You sound a lot like me. I'm 28, started loosing my hearing when I was 17, went through a lot of shit emotionally, but have now came to a point where I can see the benefits and enjoy being deaf (I don't hear high frequency sounds until they are as loud as a jet).
Correct me if I'm wrong, but if you have a landline, even if you don't have service, you should still be able to call 911. Even if you can't hear, they can hear you, just say "I'm deaf (don't say hard of hearing, people seems clueless as to what that really means, and things just get too confusing), please send help to 321 elm street" over and over.
Right now my computer is on the fritz, but I'm more than willing to help you look into all this. If you are working please contact Vocational rehab, they might have better ideas for where you live.