Love a good “bullseye here’s what you could’ve won” post!A bit late for you now but I use an e-sim from Airalo when off travelling, they only do data but way cheaper than roaming charges. Used in US and SA so far with no bother.
https://www.airalo.com/tunisia-esim



Added it to favourites though as that’s a cracking site. Abroad next year all being well with work