Updated to iOS 9.3.5 - display do not work

Updated my phone 5S to iOS 9.3.5 and the touch display stopped react. Thus I can not log in to my phone, I can not answer any call, actually I can not do anything! I tried do restart the phone, but it did not help. I also contacted customer service support, but they call me (Is there any customer service chat?) and I can not pick up the phone! GRRR. Do you have any ideas what to do? It is weekend and Apple authorised service is closed now, but I am afraid I must wait for it.