Film was not returned after sending them to be transferred to digital

Sent 1200 ft of 16mm film to be transferred to digital medium. Initially had a problem with the pricing because they had a lower price advertised on their web site. The next issue that came up was that the film was too old and could not be transferred, but they could transferred some of the film that was in better shape and would charge me accordingly. Next thing I get from them, they are returning the film and deducting a set-up fee(for checking the film). I received some of my money back (minus the set-up fee), and they claimed that they had send the film back. But the envelope I received was only.1lbs, so they have been using that "tracking number as the Proof" . Later they drop that story and came up with a new story " stating that their shop had actually returned the film but could not find the " tracking number". The film is from the 1970's and had cuts from many different events that happened in New York city at that time. Marathon, some cuts from philmore east...etc