IS GROWW RESPONSIBLE FOR NON ALLOTMENT IN MY CASE?

I have applied for transrail lighting IPO yesterday and accepted the madate at 2 pm and I also received the email from groww regarding confirmation that my application has been placed with groww application id also the amount is blocked in bank. However today in ipo section it is written that my application is rejected because of timeout at bank, I contacted groww they are saying it is because of bank issue it's not our responsibility however the amount is blocked in my bank account and groww yesterday mailed be around 2:50 pm confirming that my application has been placed successfully. So I don't know what to do? Who is responsible here? My bank or groww app? If anybody faced this situation before or aware about this technicalities please help me out.