I agree with SBF. Tell the elders that you have a right to confront your accuser face to face. In fact, your accuser should have followed the bible and came to you first.
Demand a face to face meeting with the accuser because you want to find out who is impersonating you.
Can you imagine the havoc JWs could make by impersonating active JWs and putting just enough personal information out there that they get busted.