Savingszoo.com review: Billing and payment

My Bank account was billed for $23.87 On Sept. 12, 2021. I do not know how my checking account was activated by SavingsZoo. I never joined and want a credit to my account ending in 6087, This is the only membership number I can give you because I do not have any other number but a telephone number for the description on my bank statement. This is illegal and unauthorized. How do they get these numbers?