State Bank Of India [SBI] — sbi card (simply save)

Two years back, some SBI agent fellow just walked in my office and explained about the product "SBI Card Simly SAVE". He said it is life long free. I believed as other credit cards I am holding are free too. I did not use the card even once as there was no requirement. Recently, I activated the card in September 2019 to create my own PIN. Immediately after that I received a bill of Rs. 589/- on 6 October. I thought it must be some fraud and decided to take it up with the customer care. i couldn't get connected after several trials and left it there to take it up sometime afterwards. 19 November I recd a msg saying my card has been blocked due to non-payment. I was happy that no further fraud would take place. On 20 November I recd a msg stating my outstanding bill is Rs. 1849/. Customer Care verified it is due to the annual service charge and the GST on it and the fine amount for not paying it in due time.
SBI Card has played fraud by not stating that there is an annual service charge. Otherwise I wouldn't have accepted it when I have two other credit cards of reputed identity which are free.
I have complained to customer care to cancel any charge which is fraudulently imposed without informing the customer and also to immediately close my credit card.
I now learnt from the feed-backs available on net that the same has happened with a lot many customers.
PROPER ACTION is requested against SBI Card.