I first want to thank everyone who helped me yesterday on this site.
I have effectively 'blocked' any and all ACH transactions (and otherwise debits) on my account, except deposits.
i also spoke with the woman who is the head of the ACH dept at my bank and to my surprise, no problem at all.
In fact, one of them was showing as pending in my account today and she is returning it as 'account closed'.
Further, because i deal with a smaller, local bank whom i have been with for many years, they made me exceptionally happy to tell me that NOTHING will get through that account.