I am sorry this had been so frustrating, it's tough to wait when your life is on the line! I know because I've been there. A few things to keep in mind…
* insurance only allows for one person to be tested at a time this is NOT something the center control
* anyone who has high blood pressure, diabetes, heart issues, or are overweight, etc. will not make it through the process
* as Ginger mentioned, some people say they are calling in but don't
* some people can't get their spouses or family to agree to let them donate
* often potential donors are healthy enough to donate but don't want to be part of a swap if they aren't a blood match
* donors can learn half way through the process that they have health issues
* only the donor themselves can choose to keep you informed
When I needed a kidney (due to PKD) I was surprised how many donors came forward but didn't make it through the whole process. Many people go through 5, 10, or more before they find a match. Trust me the center wants you to have a successful living donation and they will work very hard to help you.
In the mean time control the things you can control! Follow EVERYTHING your doctors tell you and stay healthy. The flu or a bad cold can quickly drop your kidney function. Stay away from sick people, illness can alter your immunity.
How are you doing otherwise? Are you on a restricted diet at all? Do you have a caregiver lined up for transplant? How are you feeling?