Unauthorised Savings Account & Unexpected Charges

During an online interaction which had absolutely unrelated to any savings product , a savings account was apparently opened in my name without my consent. I never signed up for this account, never agreed to its terms and conditions and I was never informed that it was being opened. Now I am being told that bank charges have been piling up in this account, an account I didn't open, didn’t authorise and never used. How can I be charged and held liable for fees on a product I never asked for? This raises serious concerns about information misuse. These tactics are totally UNACCEPTABLE.