Infrastructure Development Finance Company [IDFC] — Fastag debit balance

I have been issued fastag for my car KA03MQ7646 on registered mobile no [protected].
The account now shows debit balance of Rs 1150.00
I haven't used car on toll road for long time.
Whenever it iwas used I recharged my fastag with much more amount.
How the account goes in debit with4 using services?
Bank customer care does not respond.
Websites have no option to enquire or lodge complaints.
Kindly instruct bank to reverse illegitimate debit and provide statement on my emai4 :[protected]@gmail.com".
Bank should have complaint and redressal system.
Call center no. direct to visit websites and website is absent of issues
Regards
Rohidas