Renal failure

I am 25 years old and am in renal failure due to being born with kidney disease. The Davita center where I received my diaysis said that I am medicare pending but have done nothing to help me with this step other than saying it is not a problem! I began dialysis in August and signed a 2728 form on September 8, 2008 and there is no evidence of anything being done . I have been actively working to get a transplant, my sister has been screened to be a donor and I would like to be a productive person again. I do have a job but my insurance does not cover this pre exisitring condiditon. It would be healthier for me to get the transplant and cheaper in the long run than pay the Davita center for the dialysis. Can you be of assistance.