Applying Tax Exemption for Stream+

I have been going back and forth on and off of phone trying to apply a tax exemption on the Subscription based Stream+. It seems like a lot of the support techs do not know of this subscription based Steam+ option. 

I emailed the Tax Exemption Department asking to apply the tax exemption to my Stream+ Subscription and they are telling me to add Stream+ as an Add-On to my regular phone bill. There are 2 different services with the same name which makes this very frustrating and confusing for both the customer and seemingly the support. The separate subscription model has Prime, Disney+ and Netflix. The Add-on version has Netflix, AppleTV and Discovery+.

Can I go through this thread to escalate this matter? Since its not an add-on to my current phone plan and billed separately as a monthly subscription, it will need to be applied to that separately.