If you use any kind of resurrection, the result is not a vampire, but a living creature. These spells turn undead creatures back into the living creatures they were before becoming undead. Of course, being Drow, they wouldn't have any moral issues with handing the raised person over to vampires for re-vampirization!
You cannot resurrect a destroyed vampire in any way or form. The spirit that takes over the dead body when it awakens as a vampire is not the spirit of the person who died, (though I have seen it argued that the original soul is trapped in the dead body, a theory I personally discredit.) When the vampire spirit is kicked out of the body permanently, (as in destroyed by sun or immersion,) that spirit does what slain elementals do: it dissolves into the basic material, (negative energy in this case,) from which it is formed.
If a person is turned into a vampire, slain, resurrected, and turned into a vampire again, it will not be the same vampire. People who are resurrected do not remember anything from the time while they were dead, so the memories of the slain vampire will not be present in the new one.
In short, the DM may keep sending the same vampire to attack your party, but he is doing so outside of the RAW. (This is not wrong, mind you, it is simply different.) As a player, I would ask him to allow my cleric or other undead specialist in the party to research permanent destruction of vampires in his world.
A Sunbeam or Sunburst spell can generally destroy a vampire that fails its save, or perhaps you may have to research a better version specifically designed to deal with these special vampires. You may have to lower the creature's saves with other spells to get a successful destruction result.
Note that the Destruction spell not only slays a subject, it utterly destroys the body. (With holy/unholy fire!) Since there are no immunities called into question here, (Ref save required, not Fort,) and the spell description does not say otherwise, there is no reason to think it would not work on Vampires. No going back to the coffin for that one.
I would look into summoning water elementals as well as running water is deadly to vampires, and an elemental chasing a fleeing vampire would, were I the DM, count as running water.