Norton SCAM phonecalls?

Over the last 6 months or so, I have had regular phone calls from a person describing himself as being from Norton advising me that my Norton product is not working properly. Whilst I have experienced the occastional problem of errors shown up on a scan not being "Repaired", I just got the impression that the phone calls are scams. The accent of the caller was Asian.

Has anyone else had the same experience?