Sadly this is typical of my experiences with them as well in the past. I swore them off awhile back.
Last comment on this very specific situation, but to further show Graham Cracker's "service", they liked a post by a random stating "Sometimes losing a customer is a total win".
Again, without ever contacting me directly, or speaking with me about my particular issue. They just keep reiterating that they don't have a record of my subscription in their physical sheets, which I agree with, but that is not my story.
Was going to give them the benefit as they are close and I've had a pull list there for 8+ years but now forget them.