RBL Bank — over limit charges not reversed after many complaints

Address:

New Delhi, Delhi

Sir,

I am using rbl credit card from last 1 years. Rbl bank also issued a money tap credit card also but without telling me my limit was merged with my old card. This was not in my knowledge that limit of both cards is merged. After that when i used money tap card over limit charges charged to me that reversed after many complaints. After that i receive a call from rbl executive to send my documents so that my limit can be increase that i sent. After sending the docs i received call again that my card will be updated to icon card for which 5000rs annual fees will be charged and limit will be increased. After receiving the card executive told me that there is not any offer for increasing the limit on my card.
After that i sent a mail to the head of the card services from where i receive a call. I told them to downgrade my card but after sending so many mails charges not received. Between the whole instance i also received a hard copy from the bank that in my icon card my limit increased from 0 to 67000rs.
Please help as not any executive is giving any permanent solution for my queries.

Please help as i am depressed due to over limit charges.
I have some attachment of screenshots from app and hard copy of letter received from bank that i am sending.

Requesting please help regarding this.