What to do when Credit card company send a conciliation notice

Hi, I had a credit card from Axis Bank where my card expired in the month of Feb 2018. Usually for a running account, a new card is issued upon expiry. In my case, no new card was sent to me. Also, my web portal and phone app stopped showing any record of my card. When I visited the bank branch they said your account has been closed and you don't need to worry/pay anything. After two months in April I started getting call from the bank for clearing overdue and expenditure from the card. I understand that there might be some transactions that may have been unpaid but now the amount is inflated with the interest that shouldn't be borne by me as they never communicated any of it for 2 months. I also have mails that I sent to Axis bank help where I mentioned my case and asked for explanation where they didn't respond and said talk to customer care while in all my customer care I had highlighted the issue. Now, they are calling me for a reconciliation meeting. Should I even go for it?