You have six months to file claim for small claims court. Instructions are here.
http://www.nyscourtofclaims.state.ny.us/faq.shtml

Finally, please do follow the instructions provided by Alex and Leo as we would hope they would finally be respectable although past event would suggest otherwise.
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UPDATE 12:31pm Wednesday 11/4/09

Alex and Leo Entertainment say they will be responsible for organizing the refunds. The statement says those who purchased valid tickets online using a credit card or PayPal should request a refund directly from the online ticket seller. Customers should also dispute this charge immediately with their credit card company.

The promoters also say "those who purchased tickets using cash should email their refund requests to Halloweenrefund@gmail.com." Each request "must include a copy of the ticket(s) purchased, together with the place and date of the purchase, as well as the ticket holder's mailing address. Alex & Leo Entertainment will process each request within four weeks of receipt."

It's advised when customers send your email get a documented record of when the email was sent and whether it was received/opened. If you find that refunds aren't received 4 weeks after delivery of email, contact the promoters at the email listed above. If that doesn't work, contact 7 On Your Side. (read less)

You have six months to file claim for small claims court. Instructions are here.
http://www.nyscourtofclaims.state.ny.us/faq.shtml

Finally, please do follow the instructions provided by Alex and Leo as we would hope they would finally be respectable although past event would suggest otherwise.
--------------

UPDATE 12:31pm Wednesday 11/4/09

Alex and Leo Entertainment say they will be responsible for organizing the refunds. The statement says those who purchased valid tickets online using a... (read more)