Online Account Purchases (Add Line, etc.) Error “Something went wrong”

I cannot make any transactions on my account - upgrade, add line, new device, etc. 

this has been an issue in my account for over a year. Each time I try, I get the following error:

“Uh oh! Something went wrong

Please call us at 800.331.0500 or 800.331.0600, so we can help with your order.

BUSINESS_SMB_SOC_CODE_MISSING”

I’ve called the number a few times, without a solution. Today I called and was told that the service has been down for 24 hours due to an upgrade to the system but it will be back in 24-48 hours. The CSR completely ignored the fact that the issue has been ongoing for over a year, not just the last day. 

This is a business account, and when I went to the store the other day, they looked up the account and said it’s a “legacy” account and there’s probably an issue because of that and to call support. 

I’ve done that to no avail. Has anyone run into this issue and how did you resolve it?  

it is completely inconvenient to have to go into the store or call to make any of these transactions each & every time we hire someone new, an employee needs a replacement device, or upgrades, etc. I have too much to do to be expected to spend significantly more time than just self-service online.