Pixellation is (more often than not) a symptom of poor TV signal. The stock answer is to reboot your box once, then report your fault.
Check firstly that there's no known area faults that could cause this - 0800 5610061 is an automated service and often lists issues down to street/postcode level.
I'm sorry to say that VM's call queues are quite high at the moment, for numerous reasons. There isn't a magic wand to that either, otherwise everyone would be waving it! You can try using the text message service (07533 051809) but it'll take a day or so to respond, it's not instant.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks
Thanks for the prompt and helpful response. Virgin aren't aware of any problems in my area. I've done all the usual stuff: changed the HDMI cable and port, rebooted, unplugged and replugged everything so a weak signal is most likely. I tried the text message service and thats not responding either 😞 Appreciate their problems but just having a way to log the fault would have been nice.