You will need to raise this with Sky, as this is a customer to customer portal. Openreach don't speak to end users you have to do it through your ISP.
https://www.sky.com/help/articles/contacting-sky
Also check your order status under your Sky Account profile, although this may not upated straight away.
They operate a compensation system for missed appointments, quiet often due to the engineer having too many appointments or they overun, annoying to say the least!
I remember the Internet starting!
