The same thing happened to me. I’m linking to this site so that it will come up in more Google Searches. I hope it helps!!!
I was recently cold-called (on my cell phone) by a company called the Domain Support Group, which the woman on the phone said was a “transfer notification agent.” I have been dealing with domain names for many years and I had never heard of “a transfer notification agent.” I was suspicious, and it turns out I was right to be.