If you are in the USA, you may be able to get this taken care of at a physical
retail Microsoft Store.
https://www.microsoft.com/en-us/store/locations/find-a-store
Thanks, Barb, for your suggestion. I already tried that to no avail. The one Microsoft Store here in Tulsa told me they do not handle screen issues. They said they would not be able to replace the touch sensitive screen in my SP4. Their suggestion was to reach out to Microsoft. But I had the hardest time knowing where to go to get support from MS until Robert posted the URL.