"You can reach Virgin Media customer service via phone or the Virgin Media website. Keep in mind to have your account information available when you contact support. This includes the name on the account as well as your account number."
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Resetting Virgin Media Hub
Resetting your Virgin Media hub to fix internet connectivity problems is standard practice. Your router must first be turned off, followed by a brief wait before being turned back on. Power cycling is another name for this action.
The power button for your Virgin Media hub can be found on the back of the router. For a brief period, press and hold the power button, then let go. The router will turn off when its lights stop flashing, signalling this.
Before turning the router back on, wait about a minute. This allows the router to reset and may help with any short-term problems affecting your internet connection. Wait for the lights to stabilise after turning the router back on.
The wifi light should be steady, and the power light should be solid green. If the green light keeps flashing, there might be a more severe problem.