A couple of weeks ago I sold the "winter" wheels from my Audi, and received half the payment in cash, some £175. My wife went to the PO to deposit it, and got a receipt. Some 10 days later it hadn't appeared in our account, so I checked the receipt. Correct account number, but amount was shown as zero. My wife went into the PO this morning, and they said they'd check the CCTV. Less than an hour later, they've asked her to go back and they'll re-do the deposit (minus the cash iteself of course), so presumably human error. All credit (no pun intended) to the local staff.