I cannot access my job's VPN from home

After spending the better part of two days trying to get my VPN working (using the built in Microsoft VPN software) it looks like there is no solution.

I was on Twitter DMs with T-Mo support, and after telling them what I did (MTU, Dropping IPV6, rebooting numerous times) they replied thusly:

It seems like you truly have done the steps we recommend and if multiple VPNs are not working we may not be able to get them to agree with the service. I know the VPN is crucial, I have to use one for work and I know tons of people use VPN for that. We may not always go the route of suggesting to cancel service or have that talk that the home internet service is not for you but at the end of the day our number one goal is to make sure our services do the job, and if they do not, I don't want to take your money for something like that.
 

I admire them for being willing to tell me this, and to lose me as a customer. It is refreshing to see this, as sad as I am to not have a solution
 

I am still trying to find a way to keep using them (I seldom use VPN, my wife needs it more frequently than I do, and we are looking for another solution)