PNC Bank complaint: Violated my rights

We opened up an account with BBVA and our account was later transferred into a PNC account. Shortly after our account was frozen pending an investigation on my spouse and I. We have asked to see any kind of of legally binding document for the freeze, spoken with customer relations, called many times, and even went into numerous branches as directed by employee’s over the phone, who then directed us to call again. We have gone back and forth for over a year now with no access whatsoever to our account. It finally came full circle when an employee at the S. Monaco branch in Denver ,co told us that her boss I think she said Christine at the time, Had been intimidated by the investigator that came into the branch and freely handed over all of our statements and banking information to the investigator without a warrant our legal document for the information. We have finally gotten down to why nobody has been able to provide us with any information for the freeze after visiting the clerk and recorders office at the Denver courthouse and they provided us with any type of document or warrants filed that would grant the freeze on our account and there was none. Our account has been illegally frozen without cause and our privacy violated through intimidation which is no excuse for handing over all our information and bank statements to anyone but us without our consent or a warrant. We are highly upset about the violation of our rights by PNC Bank and would like an explanation from someone as to why our info was handed out freely without legally binding documents signed by a judge giving you permission to do so, and why our account still is frozen when there is nothing signed that would initiate such a move.