This is NOT a scam. The voicemail concerned a Banana Republic shipment that was returned by UPS to them because it had been damaged in transit (which I already knew about because I had tracked the package on the UPS site).
This is a legit number. Placed an online order with Banana Republic/Gap. They are verifying as a new ship to address. They are confirming to avoid cc fraud.
Complete rubbish. Claimed to be Old Navy Customer Service and rattled off a legit sounding online sales transaction but it is a scam. Contacted Old Navy directly to see if this number is real and they verified that it is not. DO NOT FALL FOR THIS! All the posts claiming this is real are posted by the same scammers!