How can I get my money back for something I didn't get that was promised?

I purchased a ticket to a blogging conference back in September. When I purchased it, while the owner or the organization putting it on spoke the words we couldn't get a refund, there wasn't anything in the disclaimer. I never signed anything. She did say (& I have proof) we could sell our ticket if we can't go, so I felt comfortable buying it. (Conference was to happen in February, this past week.) I ended up unable to attend and they were being quiet about conference details, so I contacted her about getting my money back. She refused a refund so I simply told her I wanted to sell my ticket like she said we could do if we were unable to attend. She never replied and ignore me. Meanwhile, a friend of mine asked for the same thing and she allowed her to sell her ticket all while still ignoring me. The tickets were sold via Eventbrite, so I contacted them to be sure there wasn't any sort of no refund policy and they assured me there wasn't. I paid via PayPal with an ACH transaction so I then called PayPal about disputing it. The problem was, it was past the 45 days where PayPal issues a refund. They instructed me to call my bank. I called my bank and disputed it, they gave me a temporary credit, and researched the transaction, but to them, PayPal was the merchant (instead of the actual merchant I bought the conference ticket from.) Since PayPal provided receipt of the transaction, the bank said it wasn't a wrong charge and took the money back. This whole process took several months. Now, I can't get anyone to help. PayPal says, because it's past the 45 days they won't do anything. The business owner I purchased the ticket from is ignoring me and Bank of America has been giving me the run around for almost a month. I need advice to find out what my legal actions are. I was never allowed to resell my ticket as promised and ever given a refund, yet I know she has done this for others. Now the conference is over.