The Professional Couriers — Poor customer service and delayed courier delivery

The courier submitted on 07.03.2022 from Madurai to Pune has still not been delivered even after 5 days. The customer service call was picked up only once out of my several attempts at Madurai and I was informed that the parcel will be delivered on the 4th day itself but still it has not been. Customer service calls were not answered at Pune and this delay is very disappointing.
Even after constant tracking and reaching out for updates, I was instructed to reach out to the regional manager and share the issue instead of giving the reason for the delay.
This is my customer complaint ID: CRM44461
I sincerely request a refund as this has been a totally disappointing experience and delayed courier delivery service.