Airtel — airtel 4g worst service

Airtel claims to be the fastest network but in real it is worse among Vodafone and Jio. The 4G speed is like I am using Internet 5 years ago. It is not even to send simple whatsapp messages so what can one expect.
On complaining to airtel CUSTOMER CARE, they give best answer and the attitude they show is like they are doing pity on us by providing internet. They put blame on us saying that out of 1.4 gb u have used 1gb that means you have good internet. Are we ###.. I had 400 mb left by 2pm then till night the speed was so great that I used only 7mb more leaving 393mb as it is. They are like joking with us. CUSTOMER CARE says airtel is good and put all blame on us. They have so much autocratic behaviour. I have even said that I would port my sim then they said it will take 7 days laughingly. I guarantee I will get all my knowns airtel sim ported. I think they are shifting from India to Africa so they are so rude. Worst CUSTOMER CARE services and slowest Internet. In my area jio and Vodafone give me downloading speed around 3 mbps easily but airtel is dead at 200 250 kbps.. I will definitely port my sim after my 4G unlimited pack ends..I had used airtel since I had phone but now It will end. It is barrier to digital India and CUSTOMER CARE services is worse ever I have seen...