When you get a new phone number, you will need to register your business with the cell phone carriers so that they don’t report your calls as possible SPAM. This may also be needed in the future if your phone number gets flagged for some reason. Here are the necessary links to register your phone numbers with services used by each carrier.
T-Mobile – https://calltransparency.com
AT&T – https://hiyahelp.zendesk.com/hc/en-us/requests/new
Sprint/Verizon/US Cellular – https://reportarobocall.com