TMOBILE? VPN? Work from home issues

This is how I got a non-Sagemcom gateway.  I called the T-Mobile Home Internet tech support line and asked to speak to someone who could authorize the replacement of my gateway with a non-Sagemcom model.  They said the only way they had the power to do that was to cancel my line and open a new one.  In the order for the new line they could specify the white G4SE gateway.  So, that's what they did.  Two days later the new G4SE arrived and I have had no problems with VPN.  I now have to return my Sagemcom.