Google provide the best customer service to its users through its various modes of communication as below.
Via Phone call: You can call Google customer service for any quick help by using the phone numbers available online.
Via Chat: To ask any query and raise any issue, you can connect Google via its chat service
Via Email: Google also provides an email service. You can use this to share any feedback or information.
Via Social Media: Google customer services are available on social media pages too. You can get the social media links on its home page.