What are you using to make landline calls to Greece from abroad? used to use the £2 a month subscription from Skype but that's now gone

I'm hoping to get some good advice from the collective but I've had the fortune to use Skype's £2 a month subscription for landlines and that worked great to speak to friends and family. I know you'll say why don't you use Whatsapp/Viber and some people of the older persuasion don't really get on with technology.

I was wondering if there is anything better or similar to what I used to have with Skype because MS now pulled Skype and is moving it to Teams. I can still use it but my subscription is gone and I expect Skype will disappear eventually as an app. So far I'm using Skype credit but I want to find out if there is anything better out there. A google search revealed some options but I'm hoping there is something better.

Thanks in advance!