Caller: Joseph

Emails say they are coming from Paypal re the purchase of an iphone. This is the number they give you to call to cancel the order. I have had two emails this month from them. I spoke to a person called Joseph who was trying to sell me internet security to stop the scammers. Joseph and the emails seem to me to be a scam. I checked my Paypal account and there is no purchase showing and the credit cards listed are no longer valid. So Joseph whoever he is won't get anything out of me.