Delhivery — Non delivery of parcel and failure of service

Sent a parcel via AWB[protected] on 16th sept via express service. Paid extra for express service and today is 26th, parcel was supposed to be delivered on 19th sept and they havent delivered it till now. They said outage issue and havent responded after that to any complaints. The sad part is there is no customer support number or email id. They are cheating customers and withholding parcels for no reason. A courier company like this should be blocked from operations due to their operational issues. I have no clue on how to track my parcel or whom to reach out.