The local rag (The News) has a consumer champion page (Streetwise) each
Wednesday. This business of retailers fobbing people off comes up
regularly. The retailers know their responsibilities but do try in on,
in the hope that you don't.
Sometimes the mere mention of Streetwise has the desired effect.

Give them a ring, they are always seem short or news & love a
challenge. Comet, Curry's & Dixons are one of their favorites. The
email address is:

Tel: 01329 243002

or (for advice)