Can't change marketing consent settings in MyVirginMedia

Last year we were getting 4-5 calls a day from Virgin Media offshore sales team. We asked them to call a little less often, and one of the agents without asking completely turned off marketing consent. We didn't want to opt-out completely, we just wanted VirginMedia to calm down a little with the daily barrage of calls.

We have been trying to opt back in for months but the settings in MyVirginMedia simply do not work. We click "Sounds good! Keep me up to date" and it says "You have opted in! This may take up to 28 days to take effect" but the checkbox unticks itself on page refresh and the opt-in never works. We have probably clicked it over 50 times since November 2023 but it seems to have no effect.

Please can a forum team member turn on marketing consent because we are unable to change it via MyVirginMedia. The whole of MyVirginMedia seems to be bugged; changing settings have no effect, parts of the website randomly give "oops" messages or act like you are not logged in, and sometimes it presents O2 settings which don't work because we don't have O2. Is there any way to fix this? Thank you for your help