Delhivery — Packet not picked and now not refunding money

Address:

Delhivery courier

On 13 february i booked a parcel which consisted of documents regarding an application form and as the last day was near i booked an express delivery and paid online for the same. The pick up slot given to me was between 7am to 7 pm... I waited and waited but nobody came for the pick up and i panicked as it was a question of my career and it was a very important document. I have to send it via dtdc for which i have to pay a lot of money as now with loss of one day i have to send it via ultra fast delivery.
I raised a ticket with them awb#[protected] but even after repeated reminders they did not respond nor is my money refunded.
The only way to contact them is through raising a ticket, they don't have a phone number to contact, and they don't respond to tickets.
I just feel so cheated, as i trusted them with my career but they were so reckless and now they are not responding nor are they refunding my money