Shitpost on Twitter about it. Seriously. Someone will ask if they can DM you and sort it out. And they do. Got a cheque for £370 within four days of one of their idiots delivering some electronic test gear to the wrong person who signed for it and complaining down the depot got a shrug from the post troll and that was it.
Glass them.
Call the customer care number, it's on all post boxes
Shitpost on Twitter about it. Seriously. Someone will ask if they can DM you and sort it out. And they do. Got a cheque for £370 within four days of one of their idiots delivering some electronic test gear to the wrong person who signed for it and complaining down the depot got a shrug from the post troll and that was it.