Plusnet has announced price rises for new and existing customers which will come into force from 2nd September.
The changes will impact line rental, call plans, postage and packaging, some individual call charges, international calls and early termination charges.
Plusnet has started emailing customers about the changes and sending letters to those who receive paper bills.
Here's a breakdown of what's changing.
Price from 2nd September
Monthly line rental*
£15.95 per month
£16.99 per month
Line Rental Saver
£155.88 for 12 months (equivalent of £12.99 a month)
£185.88 for 12 months (equivalent of £15.49 a month)
Evening & Weekend calls
£2 per month
£3 per month
£5 per month
£6 per month
Anytime International calls
£7 per month
£7.50 per month
Call set up fee
15p per call
16p per call
Calls to 01, 02, 03
9p per minute
10p per minute
Calls to mobiles
12p per minute
13p per minute
Postage and packaging for Wi-Fi router or YouView Box**
*Customers paying £15.99 line rental will also see the cost rise to £16.99
**YouView+ boxes will still cost £7.99 to send
As you can see the biggest increase will be on monthly line rental and the Line Rental Saver option.
The cost of renewing or taking Line Rental Saver on or after 2nd September 2015 will move from £155.88 a year (equivalent to £12.99 a month) to £185.88 a year (equivalent to £15.49 a month).
Termination charges are also changing. These are incurred when you end your contract within the minimum term and are calculated according to the service and time remaining on your contract. You can see details of these on the Plusnet website.
What you can do
If you're in the middle of your contract and are impacted by the changes you can leave penalty free. You just need to contact Plusnet within 30 days of receiving notification and give 14 days' notice to leave.
What Plusnet says
A Plusnet spokesperson told loveMONEY: "We're really proud that our customers are so happy with Plusnet that we lead the market when it comes to customer satisfaction – and we want to make sure that they keep on getting this award-winning service.
"We're always striving to be the best by continually investing in our products and services and we now have even more people, all based in the UK, to provide support online or on the phone. We've continued to invest in our network and this year alone have doubled our capacity. But even we have to raise our prices from time to time."