Good morning nikfam86,
I'm sorry for these bad experiences you had with Sky customer service.
Sky Germany offers "IPTV", also known as broadband TV or cable TV, only in cooperation with providers. When You've got already a suscription for IPTV with 1&1, so we can change Your Sky contract into an IPTV-Suscription.
So if You want to get Sky on cable from your provider 1&1, You have to add these options to Your contract with them.
It's also for You possible to get our programm over satellite or simple cable TV (without internet). When there is a connection to "normal" cable TV in Your flat, the easiest way for You is with Sky+ Receiver.
Hope I got it. Otherwise correct me please.
Send me please a private message with Your data (customer number, date of birth and adress). I will have a look, maybe we have an easier solution for You.
Best regards, Peter