I have lost my bit locker key; also lost owner's password; Now how to recover my data? contact Microsoft or Hp (manufacturer)? how much it costs?

Q#2-When ever I apply bitlocker, it generates only one key 48bit. I read in technet that there are two keys i.e. r-key and r-password Please advise

thanks; it means if i have enabled bit Locker for my users and something goes wrong in future then I am gone too :(