IDP IELTS — Money debited but slot not booked

Address: ODISHA

I wanted to book a slot of pen and paper based IELTS examination for 25th July at Bhubaneswar location. An amount of Rs 14700/-- got debited from my account via Netbanking, later faced a gateway error and no slot was booked either.

The money has not been refunded which should ideally be the case.
The customer care of IDP is so pathetic, we have been trying for like hours but no one replies even.

I do want some amount of information from IDP at least about the debited money or if the exam is booked.