We also have Sky Q, yes we are an existing customer.My Sky is the same as yours but includes Sky Q - and I’m paying a fortune, but I’m getting from your post that you are an existing Sky customer and still was able to get your package for £66. Basically we can’t afford it, so wouldn’t be stringing them along saying I will have to cancel a load of stuff.
Yes, there is an element of game playing, it's how they work. Tell them you either want to cancel or reduce your payments. They offer a reduction, you accept or not. Ultimately, there are quite a few layers to go through before you actually stop anything and you can stop and stick at any stage. You don't know the people on the phone, there is no loss of face. I don't like haggling, there isn't much of a haggle required. Try it, save money.