valid h1b petition but not stamped h1b visa

I have a valid h1b petition, valid from june 2014 to june 2017. I went for H1b stamping but 221g blue slip was issued(client letter required), finally visa didnot get stamped. Currently my organisation doesnt have any other client.

what are my options of getting the h1b visa

You cannot do anything, other than get them a client letter. Check if you can change jobs, transfer your visa to another employer, then get it stamped with the necessary documents.