My ex-business partner & I mutually used a lawyer when times where good. This lawyer stated on multiple occassions that he could not represent me or my partner against each other. However, now that times are bad, this lawyer is assisting my partner in trying to sue me. This lawyer has insider knowledge on me such as, assets, strategy, etc. I have financially compensated this lawyer and have invoices plus record of payment. How can I file a complaint against this lawyer in VA?