Bosch Home India — Refund of Amount pending since 2 months

Bosch Company has not refunded my amount deducted for extended warranty claim after sharing the cancelled cheque as requested by them and it's more than 2 months now and still no refund done despite multiple email and phone followups.
Please have this escalated to highest level to resolve quickly and refund my amount.
Order id - AWC Number ELBOJF212740