I had my recovery seed phrase, and I made a password list of what I could have possibly entered as a passphrase (the same list I used for BTCRecover but apparently my configurations came up short). The service I used was Dave's WalletRecoveryServices and he managed to unlock the wallet in just a few hours. So to sum it up: I really did enter a passphrase and I just didn't remember or write it down because I thought I could recall it from memory--it was really a facepalm moment when I received the password from Dave. It wasn't a typo of any sort.
Luckily, everything ended on a happy note this time. I am curious though. Since Dave managed to recover the passphrase rather quickly, was the string that you used anything similar to what you originally thought it could be? How different was the password compared to what you thought it was and what you submitted to Dave? Did it have any special characters, numbers, capital and lower case character combinations, etc. I would just like to know what can be brute forced within a few hours.