Caller from a loud call centre identified himself as calling from "Visa and Mastercard" something or other. Was doing me the good service of informing me that something very vague had happened with a vendor I registered with PayPal, or something. He did have my correct email address. I asked what bank he was with. He said something about CBA, but not that he was with CBA, that a charge had been identified as sketchy that went through CBA and had something to do with me. I told him I didn't have an account with CBA. More of the same for another minute. I eventually got sick of asking him questions and hung up. Clearly scammy!