resort property management Richard Lay don Resort Property Management contacted me promissing to sell my Playa del Sol Time Share Los Angeles, California

In November 2011 I was contacted by Resort Property Management with a proposal to sell my Playa del Sol los Cabos time share. After agreeint to the proposed price I signed a sales contract.
Payment was promised within 45 days. Subsequently I received a copy of a notice from Banorte Bank acknowledging an escrow deposit of $ 647,430 including 24960 on my account.
Subsequently I was asked to wire transfer $ 3244 on account of Federal Taxes which would be reimbursed upon payout. Thereafter I receibed another request for payment of state taxes of $ 2995.
I wired both og these amounts to a presumed escrow service in Mexico
At this time I was promised payment within 72 Hours.

 In Jan. 2012 I received a further request for payment of an Escrow Fee of $ 1890.
Again a promise od payment within 72 Hours  Instead, in March 2012 I received another request for payment of a Federal Escrow fee of$ 949.
I did not pay this. Since that time I have been unable to contact them by E Mail nor by telephone.
If tjhis is a fraud, which I assume it is, I would like to press charges, but need some help with this.