HDFC Bank — IMPS funds transfer timed out

I had the amount transferred to beneficiary account via hdfc mobile app and the amount has been debited but never credited to the beneficiary account. Soon after i received an sms stating transaction failed due to technical error. It's been more than 5 days still amount not returned to my account nor sent to the beneficiary. Customer care number not helpful as it's going through ivr and getting disconnected. No response to emails as well.