"Phone support has been suspended" and "this is not likely to change". Currently you need to try and contact VEGAS Support using this https://www.vegascreativesoftware.info/us/support/interview/ or click SUPPORT NEW at the top of this page and proceed.
Pre-sales and registration help is available via online live chat (see #6 here). (Not sure of tech support from there)
Is this the only support area for this product? I could not find a phone number on the site.
Please remember that there is medical issue affecting most of the world right now and many companies around the world have working at home arrangements in place. Not all of those companies have phone contact facilities in place regardless of size. Vegas Creative Software is not alone in this predicament.