Virgin Media are still following the Ofcom guidelines regarding the end of contracts, even though Ofcom advised they don't need to during this epidemic. I received an email from Virgin advising the end of my contract last week, The email details a package which they belive will be suitable to you. In my case I was already on the top package, so the emial confirmed the new price of that package and the new customer price which I wasn't eligible for.
I dialled 150 from my Virgin landline, spoke to retentions and agreed on a new deal at a price I was happy with. I suggest you take the same route, and if you dial then consider dialling at 8am as that's when it's least busy. You can also call 0345 454 1111 which is a free number so should be included as part of any landline or mobile package
Dave
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali