I'm on Virgin Media, 1gb broadband,Sky Sports, TNT Sports, Sky Cinema, the top whack TV package, top whack landline package, an extra tv box and wifi pods/extenders for £75 per month.
When you negotiate a contract renewal you have to be prepared to walk away and cancel. The retentions team will phone you back the next day after cancelling and suddenly all manner of great deals are on offer. It is cheaper for them to do that and stop customer churn than recruit a new customer.
they rely on existing customer either just paying the new price or accepting the first new deal they are offered.