With no information as to what part of the country you live in and what zone your roses grow it, it's impossible to suggest what (probably) regional problem your rose has.

Sorry, but where you garden really does make a difference.

Do you have problems with voles? It's possible that they ate the roots off your rose. In which case you're going to need to plant your roses in pots or in cages in the ground in order to save them.

Were there ANY roots? If so I'd pot it up, cut off all blooms and buds, put it in some partial shade and baby it to try and save it.

I live in Nottingham and I do not know what zone it is in. :/
It is already in a pot.. :(
No voles. No ground to put my roses in either, so they are always in pots.
There are no roots except for the main roots. Ya know, the big ones.

There are no roots except for the main roots. Ya know, the big ones.

Main roots are fine. They work just as well as the other kind. No roots at all are the kind that don't work. Did your weather warm up all of a sudden?

The weather did not warm up, no but all of a sudden it started raining for days and nights, maybe 4 days now.

Do you have vine weevil where you are - the no roots is often a sign of something chomping on them....and here in the UK, the culprit is usually vine weevils. Check the soil for larvae - tip the pot out and go through it, looking for small, white maggoty things with a tan-coloured head. Nematodes will fix the problem.

OK, does your pot have good drainage and is there a tray on the bottom of it? If so take the tray off! If you've had days of rain it could be getting too much water and doesn't have enough drainage to keep it from collecting in the pot and rotting the roots. Roses hate to have wet, soggy roots. If there aren't enough holes in the pot drill in some more and then put the pot up on a block or something, being careful not to block the holes so that the water will drain out freely.

Thanks for the replies, awesome guys and girls Unfortunately, none of those conditions apply.
I have been growing roses for a while now,and I can tell that it is the root stock that is faulty :(
The rose is already dead now, so I will try to make them give me a refund for giving me a faulty rose.

Thanks and enjoy your weeks, peeps! ^_^