For the last couple of years I've been using Google hangouts dialler to call my old dad in the UK.

It's been great because I can call his landline and it only costs 1c per minute.

Today I got a notification that they are discontinuing the service.

Any thoughts on a replacement?

It has to be able to go from my mobile to his landline.

*Google searches haven't been my friend because the results have been too US-centric.