There are many reasons to have more fraud calls on your device. Many communications and forms for users can be mistakenly signed up for or an organization has been forced to request a withdrawal of their products and services. These types of spam calls are very common nowadays, so they are very common. No big deal at all. Also if the user answers a fraud call once, they will call more in the future. Read More - https://allsavvy.net/how-to-block-scam-likely-calls
