Fortis Escorts Heart Institute — Refund of Payment after Discharge

My Father discharged from Hospital on 6th Feb UHID:10483996, Total refund amount is Rs11219/-, Hospital staff told me to wait 25 days for refund. but I have not received my refund. Strange thing is that in hospital helpline number no one respond as I was trying this number [protected] either once they pick phone and put on hold everytime. only appointment and admission people attend call.
This is not the way of working with such reputed hospitals.
My sincere request you to kindly reslove my issue and check at your end also why they people are not pick phone.