@Nina595 Your phone number wasn't blocked if you found yourself in the hold queue. Those are normal wait times now, probably due in part to Airbnb having laid off 25% of its staff and being overwhelmed with Covid-related cancellation issues. You can try getting Airbnb's attention on social media, sometimes people get better results on Twitter. But most people are just having to wait on hold for agonizingly long before they get a real person on the line.
It's entirely possible that the suspension of your account was an error. Another possibility is that there was a complaint from a neighbor or competitor. But your average rating scores would suggest that a small portion of your guests have given 1, 2, or 3 star reviews. If any of those occurred in the last 6 months, I'd suggest taking a closer look at any feedback and think of anything that might have happened during the stay to trigger the complaint.