HDFC Bank — late fee not refunded/cash limit zero/after emi completed no limit addition

Address:

Parasaray Intiyathok Gonda, 271202

I want to say that.
I used a hdfc bank credit card since 2016.
1-from 2016 my cash limit is always show zero.
2-after any emi cycle completed by payment. The releasing amount not added to the limit.
3-after many mail/call to customer care. They don't refund the late fees. And they don't solve any problem of these.
Name-anas khan
Credit card no-xxxx-xxxx-xxxx-3591
Mob-[protected]
[protected]@gmail.com
Place-gonda u. P
Deducted amount
13.3.2019 - 750rs
11.5.2019 - 950rs