TSC is notoriously inept
Unless you\'re looking for the safety of the AC21 180 day rule, count on AOS through TSC taking 2 years. It is foolish to count on things improving at TSC since every time they "improve" they later get worse again... I\'ve watched this happen for 4 years.
Personally, I have no faith in TSC and continued on with I-824 to complete CP several years ago (yes, TSC also screwed up on my I-140 by mistakenly sending my case the AOS route, so I went through the I-824 delay of 4-5 months). After that, it was heaven to deal with CP. It\'s so much more predictable and people at the NVC will actually help you..... please tell me how long it took you to reach the TSC by phone the last time you tried, only to be told that they will only talk to the petitioner or attorney???
GO CP.