There are a couple of ways you can get in touch with customer support any time you have an issue or a query. The most convenient way is the Live Chat, but you can also call them or send them an email.
At William Hill, there are different numbers you can get in touch with a Customer Agent depending on the place you live in. Here is a list of all the available phone numbers:
Support Line: +44 870-6000479
They also have email addresses you can use to contact William Hill: