A lot of households these days don’t have a home phone – what happens if the kids need to make an emergency call if you’re injured?
Buy a second hand or refurbished phone from a store. Check out Luvyourphone – you can get an old iPhone or Samsung/Sony for under $100.
Get an Amaysim $10 “As you go” sim. This gives you $10 credit that lasts for 365 days. So if you don’t use it beyond a few calls, it’ll cost $10/yr.
Data? Don’t worry about it. This is your home phone, so hook it up to your WiFi. Use a program like WhatsApp (which supports chat, video and voice) and add in key contacts.