Payday Loan Yes...help please

First, thank you, thank you, thank you ALL!

I am in Missouri. I have a PDL with Payday Loan Yes for $350.00. I have paid them $680.00 which, according to this website, is an overpayment of $330.00 because they are illegal.

I want to doublecheck with all of you to make sure I do this properly.

First, I need to contact my bank and either close the account or put a hard block on this ACH debit.

Then, I need to contact PDL Yes, in writing, notifying them that I am dishonoring the ACH, that I am revoking my wage assignment, and that I am requesting a refund of $330. I plan to send this to them via email and regular mail.

Is that all I do? Should this then stop them?

Also, does anyone have the email address to use for Payday Loan Yes? I found a few different addresses for regular mail on this website but cannot find an email address.

Please let me know if this is the correct avenue to take.

Thank you again!