i think the man can be shalinder. why did gupta call mr. bajaj wen they all agreed not to tell mr bajaj? shalinder and gupta are related....so thats why he mgiht have helped him.
Also, just becuz the security guy said it was a guy, doesnt mean he is telling the truth, maybe he was paid. (so it may still be a lady)
AND....if he wasnt paid and did tell the truth it doesnt mean the man in the car has to be the one trying to get revenge on them.....it could just be a person hired to do all this.