The answer is yes. If you don't code or write apps yourself then you find sites like freelance and put up what you need with how much you will pay and see if anyone replies.
Also is it worth trying an Alexa speaker anyway? I'm reading https://smartspeakers.co.za/set-amazon-alexa-south-africa/
In North America we have things like Amazon Alexa that allow you to say "Call XXX" or "answer phone". Are there out of the box options that would allow this to be done with WIFI International calls between the US and South America?
If not is there a way to create something like this using a tablet and app or program?
I know there apps like WhatsApp that allow international phone calls. The issue is the person I want to set this up for is fighting Alzheimers and has issues at times remembering how to make and answer calls on the app. I'm looking for something that as long as the device is on will allow a call to be made or answered with voice only.