Multipurpose card number

Operator : Thank you for calling Pizza Hut. May I have your…

Customer : Hello, can I order..

Operator : Can I have your multi purpose card number first, Sir?

Customer : It s eh…, hold………. on……889861356102049998-45-54610

Operator : OK… you’re Mr Singh and you’re calling from 17 Jalan
Kayu. Your home number is 4094! 2366, your office 76452302 and your mobile
is 0142662566. Which number are you calling from now Sir?

Customer : Home! How did you get all my phone numbers?