Hi @Xzpremium74, sorry to hear about this.
Have you been able to carry out a quick test of the touchscreen to see if the touchscreen responds as intended at the top of the display? Find and tap Settings > Support > Xperia Tests > Touchscreen.
If this test fails and the software repair do not manage to improve the response of the touch screen, I believe that the best thing to do is to get in contact with your local support team in order to have your phone sent to an authorized service center. If you have any questions regarding the service, such as routines, warranty and consumer laws, these kind of questions are best answered by your local support team as well.
I hope that answered your question!
