Is Travel SIM workable for Mobile Calls from Overseas

We purchased the TravelSIM card to save on mobile calls and texts while travelling in Europe.  Todate our experience has been variable. Issues we’ve encountered have been poor service quality and very delayed (sometimes by 12 hours) text messages. As a further update to this, we found that we could not receive calls in France if we were connected via the Orange network – so we had to manually manage our carrier selection to avoid Orange.  Given we were having a rental car crisis at the time, this was most inconvenient.