Urgent Claim No Feedback

I was contacted about 2 months ago about an unclaimed pension claim that was owed to me. The documentation was sent to me and they requested that I sent it back as soon as possible which I did. They also mailed me back to say that my documents was complete. After numerous emails and phone calls to speak to someone about my urgent claim I am still waiting. Will someone take responsibility and contact me regarding this issue. This is very bad customer service from a company like Alexander Forbes.