If they were stupid enough to put that in in an email, forwarding to Trading Standards might get them leaned on. Though I admit these days it's a long shot.
Trading Standards used to be really great about responding to these sorts of complaints, and for larger sites and retailers they'd have their own test shopping as well. Tory austerity means they haven't had budget for years so are almost completely toothless. Only when Brexit stops being the only issue driving UK politics will the systemic destruction of the successful parts of the UK ever get noticed again.
Trading Standards used to be really great about responding to these sorts of complaints, and for larger sites and retailers they'd have their own test shopping as well. Tory austerity means they haven't had budget for years so are almost completely toothless. Only when Brexit stops being the only issue driving UK politics will the systemic destruction of the successful parts of the UK ever get noticed again.