Thanks for reaching out to the Community. I'm happy to provide some insight into Venmo.
Like PayPal, Venmo is a service that transmits your money from one account to a vendor, etc. It's not met for uses such as a credit card or liability account.
You can record your payment within the bank account being used with reference as Venmo, such as an ACH payment. However, the mobile app will only support credit, check, or cash at this time. I can see how having the ability to have Venmo listed as a payment option in our mobile app would be beneficial for you and your business. I have personally submitted a feedback request to our product development team, so this can be considered in a future update.
In the meantime, you can follow all of our latest happenings and updates using our Blog Site.
Please let me know if there is anything else that I can do for you. Feel free to reach out to the Community at any time. Take care!