Openreach and Sky fitting advice

Hi everyone, i am based in England and am looking for some advice on next steps.

I had Sky broadband fitted by Openreach, who used a 3rd party called Kelly. The fitting was atrocious, I have had a complaint live since 6th February when the fitting was done via Openreach.

Sky refuse to help or acknowledge the issue.

2 weeks after the initial work, an engineer came and re-did the job, I said it looked better but had had neighbours complaining and the freeholder (my landlord) needed to approve.

The neighbours are still complaining and the landlord has said the work isn't up to standards as a wire still goes across the middle of the wall.

I have fed this back to Openreach who now have me in a communication loop where they keep trying to close the complaint as Kelly (the 3rd party) have said they have completed the work.

This back and forth has been ongoing for weeks and I am losing my mind. I can't find any way of escalating a process within Openreach or Sky.

Is there anyone external from these that I can contact?

Sorry if this isn't the right sub, I don't know where else to turn!