My advice is to assert your rights under the Consumer Act. Your P330,000 is certainly no change and you worked hard for it. Don't charge it to experience; fight for what's right. I suggest you file a complaint with DTI. I'm sure the seller would hate to be inconvenienced too.
Another avenue is the media. Report your case to a radio program (Tulfo?) and tell them your story. You should be able to get a refund if you're persistent.
You've heard the adage: "Walang manloloko kung walang magpapaloko." Maybe you can talk to the seller and tell them about your "plan". If they're reasonable, you should be able to settle the dispute amicably. God bless you.