Is there any way to get ahold of someone in charge with some authority at blockstream?

I have locked BTC from 2014 in green address. I just really need to speak to someone, anyone with some common sense. The funds are stuck in a 2-of-2 signature account, and I have my seed. I just need Blockstream to sign the other side. In 2017 I did speak to Adam Back who was pretty reasonable about it, but nothing ended up happening and now with it making up the vast majority of my BTC money holdings I'd really like to finally put this whole saga to rest.