Airtel — fraud done by airtel sales executive

We were allotted the attached 64 prepaid simcard for our internal staff members from airtel sales channel representative mr salman mob nos [protected] residing at flat nos 404 4th floor dosti complex a wing, vartak nagar, thane west where rs 30150/- was transferred to his bank account by our company however till date we are not able to trace the mr salman who refuses to attend our call. Last week mr salman came to our office & took away all the sim cards registered in our name in view of refunding the amount the very next day but again he went missing & refuses to answer our calls.