Most useless bank

It's been an endless struggle to close my accounts with this bank, and every month they still deduct bank costs while preventing me from closing my accounts. It took me over 3 years to update my contact details. Then they did not activate my new cellphone number for OTP. It's been a year struggling now to get it activated as I don't have access to my account. Visited the branch multiple times and wasted my time as they still fail to activate my number. They just removed my old number that doesn't exist anymore. When I send emails I wait days for feedback or get told to visit the branch. Well that clearly did not help anything. I want to settle my credit card and close all accounts, is it so impossible? And while I'm at it, I would like my money spent on bank costs to be refunded cause why should I pay for a bank account I don't use and cannot access to close it?