Can't recall a past topic on here where VM has cancelled a job then reinstated it shortly after. Here are some speculative possibilities based on a lot of other previous similar topics.
Yes you are due compo as you have had a long delay from your original date of 19 Nov 2025.
I would say you should be due two payments (as you have endured two VM installation delays), one covering 19 Nov 2025 to 8 Jan 2026 and the other 12 Jan 2026 to 24 Jan 2026.
If VM is going to cease paying compensation (because your order is cancelled) it is supposed to issue a 'cease notice' (paras 36 to 39 in the OFCOM doc linked below). The cease notice cannot be issued less than 30 days from when your compo started and must set an end date no less than 30 days from the issue date of the cease notice whilst continuing to pay compensation.
VM rarely follows the compo rules correctly in the topics on here and tends to try and freestyle its responses for individual customers who post on here.
So, let's say 19/1/25 to 8/1/26 is 50 days (and we will pretend VM issued you with a cease notice for that failed installation), you would then be due a further 30 days beyond 8/1/26 making 80 days total. 80 days @ £6.24 = £499.20
Taking the second late installation, from 12 Jan 2026 to 24 Jan 2026 as 12 days that would be a further 12 days @ £6.24 = £74.88
Total becomes £574.08 (plus you add on a further £31.19 for each appointment where VM said you had to be in but failed to turn up without any notice to you)
Alternatively, another argument might be, for practical purposes, you had one delayed installation from 19/11/25 to 24/1/26 which is 66 days @ £6.24 = £411.84 (plus any missed appointments)
This is, of course, the theory of how things should work. This is a slightly unusual case and the outcome may be influenced by exactly what info you were told along the way by VM e.g. how long were you left hanging when the first installation was cancelled before you knew the next installation was booked and you had a new installation date.
VM has to pay you compo within 30 days of your activation date so see what they offer. Chances are they will come up with a number much less than any of the above suggestions or they may try to avoid paying at all and offer you a 'goodwill' payment of a few quid (as we have seen in many past topics on here).
View the links below to see some past topics on successfully claiming compo from VM. You will get an idea of how VM tends to operate in such circumstances. Unfortunately all of these cases had to go to the ombudsman to get what was owed
Installation Delays from November 2025 to January 2026 – Urgent Help Needed | Virgin Media Community - 5689822
And have a look at VM's published info on the compo scheme
https://www.virginmedia.com/help/billing-and-payments/automatic-compensation
https://www.virginmedia.com/legal/fibre-optic-services-terms-conditions/automatic-compensation
and the original OFCOM doc which is easier to read and does not contain any further clauses added by VM.
https://www.ofcom.org.uk/siteassets/resources/documents/consultations/uncategorised/98684---automatic-compensation/associated-documents/industry-code-of-practice-for-automatic-compensation.pdf?v=326264
So, suggest you wait for a VM response to see what they offer by way of compo. Then decide on how you want to proceed after reviewing the compensation doc's and making your own calculations.
Finally, don't be put off fighting for whatever amount it is that you think you are owed. If you read the similar past topics in the links above, you will see that VM threw down many roadblocks along the way but the ombudsman mostly sided with the customer either in full or in part.
Good luck!