Venmo disputed rent payments

[Sharon S.]

Hello community, one of the tenants decided to dispute past VENMO rent payments, he is claiming that he had not , but Venmo is now asking us to pay back and until then the account is frozen, and each time someone pays us, it will be going towards the balance, of course, I am disputing, its unheard of. Anyone has experience with that?? He had been paying with venmo in the past 3 years, and how is it possible that Venmo even allows it to happen??Thank you,