well the only thing i can suggest is to find a pirate torrent of this.
Download the game, then sign up with the serial you already got it and u will have the game. Dont forget to autopatch to the late version which that will overrides the cracked executable with the original one file.
Always buy the game either downloadable version or a physical version from a store nearby so u can always ask for a replacement on situation like this.
also - Keep the torrend as i heard that even support is paid nowadays. Specific, if have a digital version and wanna download it again in a period of 30 days after purchase, you have to pay...