It's awful this has happened to your poor neighbour, bless her.....
I would do, what I normally do, if getting no help and assistance from any staff in customer services of a company....go straight to the top.
I have contacted the CEO of M&S over a certain matter and they dealt with it accordingly in my favour...because they listened to me.
The CEO in M&S Executive Officer is Mr Steve Rowe.....his Email address is
[email protected]
Her query might be dealt with by one of Mr Rowe's Executive associates, but he will definitely see it first.
I wish your dear neighbour all my best wishes to finally get this sorted out with a sympathetic view tamaris x