Venmo is instantly reverisble much like credit debit. This is one of the most DANGEROUS ways to sell bitcoins and is favoured by scammers. We discourage using Venmo unless it is for very trusted trade partners.
I have verified venmo account, I can provide a picture of my state id. And i can guarantee that your account wont get frozen/banned. Usually venmo accounts get frozen when you try to send/receive more than $300 per transaction, It happens because the user has a new account and venmo needs more personal information to make sure its a real person. I have an account with previously shown transactions and verified information.