Delhivery courier service - Package lost

Refund of ** when my parcel was valued over **** rs.
So let me get this straight.
For your consideration here is the chain of events with timeline.
**th august - I requested a pickup of a parcel whose value was around ****.
Was promised delivery within * days.
**th August - parcel picked up by Delhivery.
**th August - I get a call saying we are here to pick up a parcel. I inform the company that parcel has already been picked up. Around * o clock I receive a confirmation call that parcel has been picked up.
**th - I keep tracking parcel still not picked up. I try contacting customer care on phone .Out of reach. Sometimes waiting. Number does not exist.
**th August - I send a mail to Delhivery about the situation with the PDF containing details of parcel .No response.

**th August - frustrated I manage to find the number of guy who picked parcel .Number switched off. Fortunately I have number of second guy who attempted pick up . l call and tell him my situation and request him to help me.
He gives me the number of the local head who is responsible for collecting parcel.
I contact this guy he tries helping a lot but is unable to track parcel.
He refers me to another guy who is rude and asks me who gave you this number .Finally after polite requests he tries calling the guy who picked up but no response. He says he will get back with status in evening. Never
heard from him again.
**st August - I get a mail saying that ** rs have been refunded to your account. I am enraged by the utter lack of apology, the meagre compensation , lack of communication. I reply stating the above facts. No response. Out of utter frustration I research on legal ways of handling the situation and find out that I have to send a notice before a legal complain.
**th August - I send a notice stating my problem and my decision to file a legal complain against the same.
**th August - You send me a email saying that there has been no communication regarding this issue. Every mail I sent had the required information to track my parcel.
I give Delhivery proof of communication.
After all this I get a email saying that refund has already been processed referring to events of **st August.
After reading all this please give some due consideration and just think about the frustration i have experienced.
The utter lack of professionalism Delhivery has showed and then ask me "how you wish to proceed" and "are you satisfied by our response".