Fans of Pawan Kalyan were a disappointed lot! While they were glad to see him in his character Ojhas Gambheera (OG) costumes at the OG concert in Hyderabad on Sunday, they were livid after the filmmakers haven't released the trailer on social media. Even while Pawan kept asking director Sujeeth on stage to unveil the trailer, his efforts went in vain.Also Read: Pawan Kalyan Sang Washi Yo Washi at OG Concert; Fans Thrilled Pawan Kalyan plays a gangster in OG Technical snag delays trailer OG trailer was supposed to be released at 10 AM on Sunday morning.