Shocking Business Banking Customer Service. Disregard for Client Satisfaction

I have been unfortunate enough to have my overdraft facility withdrawn without any word from my banker and the bank. Surely a banker who looks after a business account should make contact and liaise with his/her client? I do not even know who the banker is! My account has had 4 bankers over the years and i only find out about the change after i give chase when i need help. Shocking customer service. There is no respect for people's accounts. Its only the balances in the account they care about. Atrocious