If you need to contact HP commercial customer support by phone the phone number is (800) 888-0262.
Ever since the company split into two separate companies, HP’s customer support process is really messed up. I have wasted at least two hours trying to get a simple issue fixed on my HP Chromebook, and I keep getting transferred back and forth between agents. In fact, the last agent I spoke to was totally incompetent and tried to blame Google (the OS was damaged/missing on the Chromebook) and told me to call Google myself for support! That was a true shocker, as I have had hardware/software issues with Dell before and they have always serviced my issue without transferring me 10x and trying to transfer me to Microsoft.
Good luck and hopefully you can cut through some of their messed up customer service issues at HP commercial support by dialing the number above.