I have long had a couple of abandoned wallets that were opened on blockchain.info in 2014.  Then, before them, the devs of this wallet came up with a seed phrase consisting of 15, 17, 19 words.  In my case it is 17 words.  I decided to try to restore access to these old accounts, although there is very little on them, maybe only ~ 1000 - 2000. sat.  But I was just wondering if I could get access to them and find out the real seed phrase to these 12-word MineT accounts.  I used a service to find the wallet number and password, which is discussed above in this thread.  But I don’t remember, it seems like I didn’t report any of my email to blockchain.info at that time.  I don't remember at all?  But even if I sent them an email address, it was still lost.  So, on this specified service, I reset 2FA and entered a new email in the appropriate column, to which I naturally have access.  Then I received a notification that the recovery process had started.  And another message that the recovery process can last up to 2 weeks. 

Actually why am I writing in this thread.  I'm running an experiment and will report here how this recovery system in blockchain.info works.  How does support work and will I need to contact support again or several times.  Will support respond and what will they say?  And will I eventually be able to restore access to this custodial wallet?  I did all this yesterday.  So far there has been no response from blockchain.info.  When I enter my wallet number and password, it says that I need confirmation by email (to which I do not have access).  So far it's a vicious circle.