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If you ordered via PayPal you can file a complaint with them even if you are outside the 45 day window. One customer has already gotten a refund from PayPal that was outside the 45 days.
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PayPal turned me down within minutes. The reason stated was
"This dispute closed because it was opened for more than 45 days after the transaction date or did not meet other filing criteria."In light of your experience, your mileage may vary. It is important to try PayPal first because that is the easiest route to getting your money back.
Your next step would be to fill out the form at the FTC noting that you ordered a product X number of days ago and that BFL has still not shipped it to you. When you asked for a refund, BFL refused.