These are the usual fake scammers from India posing as "Canadian Pharmacy" (or U.S. Pharmacy). But it is nothing but a scam to steal your credit card number so they can charge thousands of dollars of unauthorized charges.
This is a fake "Canadian Pharmacy" scam originating from a call center in India. This scam is run by criminals to try to steal your credit card number so they can charge thousands of dollars in unauthorized charges on your credit card.However, if you are aware of the fact that NO credit card interest rate offer, NO "online pharmacy", NO IRS agent, NO bank, and NO Microsoft/HP/Dell Support will make unsolicited calls to you from a variety of fake phone numbers coming from dozens of area codes that they rotate through every week, it is actually very fun to toy with each of these criminals and drag out the phone call while I continue to cook, clean house, etc. LOL!