Pegleg

I had my right leg amputated after a knee replacement. All surgeries (6) were performed at a VA hospital or their educational partners. I filed the claim in NC because I was residing there at the time. I had to move to MO and now The NC VSO says they can't represent me and the MO VSO told me that a change in representation will cause my claim to be back logged. I filed the NOD myself because I couldn't get help from the NC VSO. It was filed last February at the regional office in Winston Salem NC. Each call I make the same script is read to me about it taking 291 days. That has lapsed and I can't even find out if they have the correct address although I've tried several times to update it online, by phone and change of address form. I really need some advice.