Spice Jet Airlines — wrong name on ticket.

I booked ticket through my friend and when i went to counter to my great surprise i found that somehow "s" got emitted from my name jasbinder singh and i was informed by lady at counter (Which was very helpful and she even let me use her phone to talk to customer care) that i can not board the flight with wrong name jabinder. Anyway i end up buying new ticket and that my money got wasted since my pnr was updated with wrong name. My question is how did my pnr was updated with wrong name, dont these guys have system to check if person's info on ticket is same as on passport? First of all it was my mistake that i didn't check my name on the ticket but how about these guys checking the name before updating pnr. What if i had no money to buy another ticket i would have miss the flight. Missing a flight is not good because your job, career, life could be at stake