Those wild colored flowers/fruits/vegetables are all over ebay and ali express..they are a scam..most of them aren't even the type of plant you wanted, much less the color!
As for real rose seeds..yes..you can grow a rose from a seed, but it will be unique, it will not be a clone of the bush you took it from..also, the seeds need to be stratified and started in a cold frame.
Sorry you got duped..I'd complain and try to get my money back.