Business Travel Network Inc. Claimed to be able to sell timeshare gateaways for large profits for me. Atlanta Georgia

I was called by a Susanna O Mally about the opertunity to sell my used timeshare gateaways for large profits. All I needed to do was send $1490.00 as a deposit for the sale of 10 getaways and they would sell them to large companies for conventions of corporate meetings, ect.  My return could be very good for me.  After some time I recieved a phone call that they had a 13,000 dollar check for me as they had rented the weeks for $1300 per week and because of an mistake on the brokers part, I would also get my $1490.00 back.  At this point it begain to sound WRONG.  All I had to do was to deposit $2850.32 in SEC Management SL account #898016064763 at Bank Of America and the sales tax would be paid and I could get my money.  I checked with the bank and this an open account, however it belongs to a company that has only opened in May of 2013.  It seems that something is not right when you cannot reach any of the telephone numbers they give you from O Mally, to Busniness Travel Network Inc. at any time.  Only person I can reach is a man named Mark that wants me to make this deposit for the so called sales tax.  I have not, however I feel that the hole matter has been a scam.