[Moved to Photoshop forum.]
What money back?
You used Photoshop CS3 for years. Presumably you got value from it.
You have a new computer, quite likely with an OS Photoshop CS3 was never designed to work with. Does Adobe claim it should work?
Do you really think this is someone else's problem? I imagine you will not get any support from Adobe.
All that said, I've been able to get Photoshop CS3 to work fine on Windows 8.1. Perhaps if you'll be more forthcoming with details of your system someone might be able to help you to get it to work.
Go into Photoshop, choose Help - System Info, copy the results, and post it here.
Work your way through these steps
And do so before you phone Customer Support, because chances are, you'll end even more frustrated after dealling with them.