Not true - I called 4 weeks ago when my '21 refund appeared in my USPS daily digest, but didn't show up for the next 3 days prior to calling. I got a hold and time updates for like 20 minutes before speaking to a person.

That person told me I'd have to wat 30 days and call back for the state to issue a stop-payment and new check. Called 5 times today - same as O.P.s tale.