When I joined Sky I told them in writing I use wifi, the speed was very slow and they emailed me it was because i use wifi! So backwards, they sent me 2 engineers, many routers and a booster that could never connect.
I left them, their services are scandously very bad.
Now trying to send back their equipment is difficult as they threaten me by text but yet refuse to send me return label! So even with recycling they are bad.
With all the bad reviews one wonders why they have not yet been fined.