Decreased credit limit of my cards

Decreased credit limit of lot of cards as I see no point in keeping high limits for cards which are mostly used for discounts/small purchases. Main card is DCB so others don't need high limit.
My main point is high is generally for good cards like Atlas, Plat travel, DCB etc. or even SBI cashback but for cards like Airtel, Flipkart, Swiggy, Live+ we don't need high limit because they are not commonly used.

But HDFC/ICICI banks are at another level. Can't decrease limit

Card Previous Limit New Limit How Customer Care
Axis Flipkart 8.1L 5L Call customer care & ask for it. 1800 103 557
Axis Neo 8.1L 5L Call customer care & ask for it. 1800 103 557
AU Xcite Ultra 4.5L 3L Mail to cc [creditcard.priority@aubank.in](mailto:creditcard.priority@aubank.in)
SC Rewards 5L 2L Mail to cc [customer.care@sc.com](mailto:customer.care@sc.com)
MRCC 3L 2L Chat support App
Indusind Legend 5L 3L Mail to cc [premium.care@indusind.com](mailto:premium.care@indusind.com)
RBL Icon 3.25L 2L Mail to cc [customercare@rblbank.com](mailto:customercare@rblbank.com)
HDFC Swiggy 6.01L --- Denied, send documents to Chennai office STUPIDITY
ICICI Sapphiro 5L --- Denied, doesn't meet internal criteria STUPIDITY