Scam?

Received six phone calls in 30 minutes from apple support claiming there was a breach in my iCloud. Pressed 1 to speak to tech support. They knew my name and said my iCloud Account was being used in Russia Romania Philippines and some other place. They told me to go on my iPad and go to the App Store and download an app that would allow them access to my iPad. I hung up because that sounds very suspicious. They have called twice more. I was less suspicious when they knew my name since my name is not on my landline account. Is this a scam? They are very persistent.