College requesting Official Transcript

SFSU requested for official transcript as a proof of graduation. But, here in India we only get 1 official transcript from the education board.
So what i did was : my counselor prepared unofficial transcript under the school letter head with all the marks entered which was sealed and signed by my high school along with photocopies of the original transcripts (9th,10th,11th,12th) and mailed them to SFSU (even sent them the scanned versions ) – But now they are saying that photocopies are not accepted and they want me to submit official transcript.

What Am i supposed to do ? There’s no way i’m going to send my official marksheet all the way to USA as we get those marksheet only once and are not allowed to send it anywhere like this.

Please help me out with this,
Thank you