How do I stop ai from randomly showing up in my meeting and recording? It freaks everyone out!

[Envoy]

When other people send links to join a call, I click and join in from my pro account. Shortly after Read.ai shows up and starts recording. I've unsubscribed from read.ai (I had previously tried the ai out but it felt incredibly invasive) but even though I asked to end it, it randomly shows up which is so embarrassing for me when the host of the call didn't give permission. 

How do I get rid of it once and for all?