Just to let anyone else who is trying to get their Tesco refund know, that the Payzone scheme is a broken as ever.
Mrs PF has been going through the same frustration as everyone else. The local Payzone knew nothing about it. The Tescomobile bot told her that only certain Payzone outlets were taking part. Tried two others without success, they only took in Payzone money, they couldn't pay out.
Moved on the local Tesco store who are also listed as Payzone agents, except they aren't anymore. They rang Tescomobile but couldn't get through. Helpfully rang the next Tesco store who still are Payzone agents, except they are only agents of the taking-in money variety!
Next step is to contact Payzone directly on their website where they promise to be in touch if you are unable to get a refund at a Payzone agent. Not holding our breath on this one!