I cannot receive calls on my IPHONE. I can make calls. Already looked to make sure settings are correct...no airplane mode, no silence,DND, etc

I cannot receive calls on my IPHONE. I can make calls. Already looked to make sure settings are correct...no airplane mode, no silence,DND, etc. Earlier today I kept getting messages on my iMAC indicating error with Keychain for go.trouter.skype.com which I eventually deleted, not sure if this has something to do with phone not receiving calls. It was working earlier today