You may reach them by following the instructions below.
- Go to Contact Us - Microsoft Support
- Choose how you would like to get support for your Surface device.
- Type in the problem you need help with.
- Look at any available solutions offered and select Contact Support.
You may also check this post from Barb Bowman and follow the steps with screenshots on how to reach out to our technical support team: How to get Phone and Chat Support (for Surface Home/Consumer - Microsoft Community.