Just to update the thread the VM response is essentially " It appears that the information you've received is just incorrectly generated information."
The information is in black and white on the official My Virgin Media app and still clearly sets out, at time of posting, that my Volt M200 package is inclusive of landline and weekend calls
I accordingly assert my statutory legal rights under s 50 (1) (b) of the Consumer Rights Act 2015 to the landline and weekend calls as inclusive parts of my existing contract with VM at no additional costs to me.
I'll give VM 14 days to fulfil this part of the contract. If it fails to do so I will formally escalate the matter using the usual processes up to and including Ombudsman Services.
I look forward to an early resolution.