Two internet lines going to the same Address prevent me from making any changes to my account

To the Xfinity Customer Experience / Retention Team or anyone that can help! ,

I am writing to  express my frustration regarding my account. Despite being a long-term customer, I find myself in a situation where I am forced to pay significantly inflated rates with no path toward resolution or the ability to access current promotional offers.

My current monthly invoice has reached $372.00 / Month (excluding mobile services). This is for the Popular TV plan with no premium channels or add-ons and the Gigabit X2 Internet plan and our last promotional contract ended over a year ago. We have tried many times to make changes and get under a new promotional contract, but keep being told it is not possible because we have 2 Xfinity Gateways at one address. 

The issue is: 

Our property consists of two buildings (residences). Due to the distance and structural interference between the buildings, standard mesh networks and signal boosters and other things we have tried have not been good enough to ensure the connectivity required for professional video conferencing and high-bandwidth use, so the only viable solution was to install two separate Xfinity gateways on the same address.

The problem is:  I cannot make any changes to my existing services ( other than to cancel my services)  or get on any new promotional offerings

• I am not under a current promotional contract, I am being charged "everyday" rack rates that are significantly higher.
• I am paying for the Gigabit X2 plan, which provides 2Gbps—far exceeding our actual needs.
• I am currently paying rental fees for two gateways and three Wi-Fi-enabled cable boxes.

The core of my frustration is that every attempt to reduce these costs has been blocked by what I am told is “internal programs cannot support two internet gateways every time they try to make changes" ( as a side note your customer service people have been really good a few have really tried and say it does not make sense that they cannot help me fix my issue or change anything) . Even trying to adjust my current plan to a 1Gbps plan to lower my monthly rate, I am being told this is not possible. Essentially, Xfinity’s is forcing me to pay a $372.00 "penalty" every month because I require a two-gateway setup for basic coverage. I am being told I must either accept this inflated cost or sacrifice connectivity in one of my homes.

So if a representative with the authority can help me fix this issue or contact me. I would like to be placed on a 1Gbps contract with current promotional pricing keeping the 2 gateways. Because at this point I am not sure what to do, it seems no one can help. While I like Xfinity and have been a customer with no major issues for over 10 years, it seems my only choice may be to go to Starlink or AT&T.