Philips - no after sales support

I purchased a very expensive UHD 28 inch computer monitor made by Philips (288P6LJEB). This monitor is out of warranty and has consistently been giving problems with the on screen menu popping up all of the time rendering it useless. On investigating on the net, this is a common and widespread problem. I have spent/wasted a couple of hours trying to get hold of someone at Philips South Africa that can give me technical info. I am unable to speak to anyone. I have been cut off, shoved from pillar to post, encountered unanswered phones etc. It seems that there is ZERO support for Philips computer monitors in this country or maybe even any other Philips product judging from my experience! I am going to trash this monitor, cut my losses, buy a different manufacturers (LG) monitor and will NEVER again ever buy another Philips product! I strongly urge anyone purchasing Philips to reconsider as you will get zero after sales support!