I think you will be disappointed if you contact the police. they will simply refer you to Trading standards who will then tell you it is nothing to do with them as it is a private sale.
Not sure what action you can take with the bank but don't expect miracles.All your posts come through sounding very irate and if that was the tone of your contact with him? I can understand why he cut you off
Can't see any intimation of fraud at all, just possibly mis described goods
Be careful your actions don't backfire on you.