Creaking suspension issue

I have a 2014 Auris Sporting Tourer which has a creaking suspension issue. It creaks both on the nearside and offside when a the car's corners are under load, so for example going up or down multi-storey car parks and sometimes going around roundabouts

Toyota have checked the car three times now and say there is nothing wrong with the suspension but as the video below shows, there is an issue. Sadly the technician who said he watched the video yesterday wasn't the technician who worked on my car! I actually doubt they watched the video as stats show no views either.

Anyone have any ideas at all?

Thanks very much.

https://vimeo.com/317008090