Phone 150, select the option to change your services. Select telephone, & one of the options should be "Line Rental Saver". The current price is £196 which is not the bargain it used to be, but is still better than nothing.
The setup is automated, so no waiting for an operator, & payment has to be by credit or debit card.
Cable customer since 1993. Services: FH TV, Sky Sports & Movies (2xV6), Talk Anytime Phone, VIVID 350, Virgin PAYG Mobile