Ebay is as good as anywhere. You may have to just keep looking, or get one a different colour and get it sprayed. Around here it's about £100 a panel to prep & paint (assuming no damage)
When requesting help of a technical nature, please give as much detail of the fault as possible along with details of exact model, engine size & type, gearbox, year, mileage, and any relevant work carried out to try to solve the problem to help us help you.
Better still, put the details in your signature.
I was in the same situation only had my car for around a month and someone had smashed into the back of my car leaving a considerable sized dent in my boot lid. If you go to Halfords and get their dent improvement kit it works like an absolute charm. It's expensive at around £20 but wow it made one hell of a difference and while your there get some Paint, primer and lacquer to cover up and you won't barely notice it. Just don't be afraid to put all your body weight on when pulling the dent out!!
You can make something idiot proof, but someone will just make a better idiot.