There are many ways you can contact VTU.
The most direct way to contact VTU is to call their customer service number. This number is available on their website and is manned by customer service representatives who can answer your questions.
You can also email VTU. Their email address is also available on their website. Email is generally a good way to contact companies because it allows you to have a written record of your communication. This can be helpful if you need to follow up on your inquiry or if you need to reference something later.
There is also a contact form on the VTU website that you can fill out. This contact form goes to the customer service department and is another way to reach out to VTU.