Horrible disgusting support service!

I just had the most horrible experience while just trying to log a fault re Showmax streaming. Made contact via Messenger, at least they did respond... I explained issue that viewing any Showmax title has a stutter, not buffering, and that this was happening via multiple devices, LG tv built in app - webOS, Chromecast and via a Chromebox. All other services have no stutter; Netflix, Dstv Now and Amazon prime - they all stream flawlessly except dstv now which has issues buffering from time to time but no stutter. Internet is 20mbps vdsl 20 down and 5 up. After explaining this the service rep still wanted me to run stupid tests and then wanted full pedigree info of my devices. All I asked is that they report the issue to their support engineers but they were unwilling. If multiple ppl report then surely it's a showmax issue. If I have the issue on multiple devices and other services are fine, then surely it's a showmax issue? Horrible pathetic service! After all that they could not even give me a ref number! Disgusting how they find it OK to waste one's time!