This is the number for Western Digital's global customer service center, which also provides support for SanDisk, G-Technology and HGST. It's answered by an automated menu system with a notice that calls may be recorded and that they may collect your personal information. It also said that the number for the online store has changed and provided that number. After that, you have three menu options to choose from: Press one for Western Digital, G-Technology, and HGST products, two for SanDisk and SanDisk Professional products and three for online store support.
I selected one for Western Digital. A recording informed me that legacy product support is only available online and listed several product lines this included. It then said that I may have to wait a while to speak with an agent on the phone, and if I'm using a smartphone, I can instead press one to be sent a chat link. Otherwise, I could stay on the line to speak with an agent. After waiting a few seconds, I was given options for RMA information, Western Digital and HGST product support, G-Technology product support or SanDisk Professional product support.
After selecting the Western Digital option, it took me to a recording that requested I have my hard drive serial number ready if calling about an unregistered product. It said to make sure all of my data is backed up, as the drive may be wiped as part of the troubleshooting process. I was put on hold to wait for an agent. On hold, it looped a couple of different recorded messages, both of which began by saying the only way to truly back up data is to save it on two separate physical devices. I was only on hold for about two minutes before an agent picked up.
The agent was polite and professional. He didn't offer much troubleshooting, though. It seems that they usually offer an RMA replacement for products under warranty and can't do much otherwise. My product is a few years out of warranty, so he suggested some basic troubleshooting, like resetting the hard drive. It definitely feels like an outsourced call center rather than tech support.
Going back to the main menu, selecting SanDisk takes you through a similar menu tree. As long as you stay on the line, it'll take you to a customer service representative. The third option for the online store takes you straight to a rep. I'm not sure if this is a different call center than the one with the previously listed new phone number.
Most people call Western Digital when having issues with one of their products. If you still need help after calling, you can find support on their website. There, you can check if your product is under warranty, submit an RMA request, read knowledge base articles, ask questions on their user forums or chat with an agent. It's refreshingly easy to reach a human on the phone, but their website is a great resource as well.