Air India — complaint about timings of flight

My family is traveling from muscat to ahmedabad via bombay thru air india ai986. Now this flight is getting delay every day by 1-2 hours. I was tracking the flight then i come to know due to delay from bombay to ahmedabad ai91 this flight is getting delayed. Ai 91 bombay to ahmedabad 5:40 pm to 6:30 pm, ai 985 ahmedabad to bombay 7:20 pm to 9 pm, bombay to muscat 10:20 pm ist to 11:20 gmt. If local flight is gets delayed. International passenger are getting harassed. Due to this ai 986 will get delayed & reach ahmedabad by 8 am morning.
Due to mis-management by air india passengers are suffering.
This is making bad reputationsof india as it is national carrier of country