Go First Airline — Unjustified flight cancellation and re-accommodation

I had made my flight booking from Mumbai to Male dated 23/04/2022 departure at 11.45 am and which was a direct flight.

However recently I received a message from go air stating -
" Dear GO FIRST Flyer! We regret to inform you that for your PNR CDIFJX the following flight(s) has/have been cancelled:
G8 - 23 on 23Apr'22 from BOM to MLE.
You have been re-accommodated and your itinerary is:
G8 - 6022 departing on 23Apr'22 at 08:10 hrs from BOM and will arrive COK at 10:10 hrs and, G8 - 6023 departing on 23Apr'22 at 12:10 hrs from COK and will arrive MLE at 13:10 hrs.
This change is due to issues beyond our control. Kindly Ignore the SMS if booked as per scheduled flight timings. For any changes you may call us on[protected]/[protected], up to 2 hours prior to departure."

I am not ok with halt of 2 hours in COK having paid for a direct flight. I had a word with the go first customer service agent and they informed me that either I can cancel and get full refund or I can change my date of fly.

Since I have made all the other bookings at the time of booking flight, it is not possible for me to change my date of fly and even if I do than additional day's trip cost will not be borne by Go first.
Also, giving an option to cancel and provide the refund doesn't solve the purpose as now there is no direct flight on that date in the portal and with short time booking with high price won't be feasible for me. Further, they stated the flight is cancelled due to issues beyond control. They have been silent about the reason of flight cancellation and I strongly believe it is beause they are trying to accomodate everyone in the connecting flight and forgeting about the customer inconvenience of wasting additional 4 hours in the journey. The Airline have left no choice for the customer by informing them just few days before the departure and this is not at all acceptable.

I have tried to contact the grievance department of the airline 2 times before but still I haven't heard anything from them as yet.

Please help me resolve this issue and get the airlines to pay for their unjustified changes to the itinerary.