However this does not
appear to be the situation here
unless this is a known inherent fault with this particular monitor there
may not be any legal rights involved.
If this is the case the claim is against the warranty offered by the manufacturer which is in ADDITION to your statuary rights not against Scan.
Theoretically
in this situation Scan are quite within their rights to wash their hands of the whole matter, whilst this may not be the best solution in terms of customer relations they are entitled to do so. In this instance Scan have not said they will not help, they have asked the original poster to wait until Tuesday when they will see what they can do to help.