India Post — delay in delivery of parcel stuck in mumbai crc l1r

My parcel has been strucked in mumbai crc for last 21 days. There is no update of it. It contains some books for my exam which is very important for me. The tracking id is:- rm[protected]in. The weight of the parcel is 522gm.
The details of tracking till 19/07/2020 is:-
26/06/2020
15:18:20
Mumbai crc l1r
Item bagged

26/06/2020
11:02:23
Mumbai crc l1r
Item received

24/06/2020
11:27:06
Nashik road rms l2r
Item bagged

24/06/2020
07:59:08
Nashik road rms l2r
Item received

23/06/2020
15:47:36
Gole colony s. O
Item dispatched

23/06/2020
15:46:01
Gole colony s. O
Item bagged

23/06/2020
14:14:48
Gole colony s. O
Item booked