Calendar appontiment spam
My IPhone calendar is full of appointment like "You've win an Iphone", "Your Iphone should be not protect from malware..." and many other note with notification, reminder and banner.. For the next 6 days my calendar is full.. more of 20 note x day. How I can remove this virus? Or what is this? WHY THE IPHONE HAVE THIS SECURITY PROBLEM?
iPhone 11, iOS 14