Bad service

I was finance by in February, and i changed the banking details in March, i went to the bank to notify them about my new banking details and the gave me an email address, but no one responded, and i did a follow up but still. From March i have paying through the atm becoz the banking details is updated. And i went back to the bank and they gave another email address but the same. I have 3 email addresses and when i send an email no one is responding. For me to the bank or atm is not easy because of my work. I don't know what to do now.