I presume renewing the line rental saver before the price rises means the increase in call charges will not apply until the end of the renewed rental period?
Line Rental Saver only covers the line rental charge; I would expect call charges to be at rates applicable when the call is made. This will also apply for call package charges which are appropriate to the invoice date.
Has the date changed for the price increase on line rental saver? I'd got it in my diary to renew before the 29th October, but now the price increase happens on the 18th Nov.
