Mobile Hotspot Not Working

Wifi hotspot stopped working in 2019 Chevy Traverse on 12/24. After six calls overseas to where the representative only reads from a script and does not actually listen to the problem they have “reset the connection” repeatedly to no avail having me call through onstar, shut off vehicle, open and close the driver door, wait four minutes etc.  was transferred stateside to “escalate” the issue with “connection services team” which did the same lengthy procedure repeatedly with no resolution,

Called customer service now at 140 am cst and “advisor” stated she has received “several calls today regarding vehicles with no internet service working.”

Upon turning on vehicle , prompts state that vehicle is connected to WiFi hotspot xyz, IPhone shows connected to hotspot, yet there is no actual internet connection.  Pages do not load on primary iPhone or connected ipad.  Receiving zero resolution other than there is “an open ticket and you will have to call back at 9 am est to discuss with them.” 
Extremely frustrating especially when the hotspot is an integral part of being able to do my job on the road and every “advisor” is basically throwing up their hands and passing it onto the next to deal with, with NO resolution.