My unfortunate GMAT, what should i do?

Hello!! i had a really bad experience with GMAT. I had studied from 2 months, by the end of 2 months, i was doing great, was scoring 690+ in manhattan in my practice tests. was getting around 35+ in verbal. So, i gave my test on 6th sept, and unfortuantly score 660 (49,31) . by the time i reached verbal i had blacked out and couldnt concentrate so verbal went bad.

So i took another date for 9th oct. i was preparing well for the next test. gave a few practice test, was consistently scoring 700+ in princton review and veritas got 36+ in verbal in both of them. I practiced alot for verbal, and knew that i would do well in verbal. But was shocked to see my score on the GMAT 650 (50, 28). my concentration was good during the test . i got lower than last time in verbal, quant improved but verbal went really bad. so now im scared, what should i do? should i give a test again. what materials should i study, does this happen to alot of people. My family says that whatever happens happens for good (i belong to a religious family). but im not satisfied with my score. Should i give it again, what should i study this time, what new materials should i refer to?

what i practiced for verbal:
OG 10
OG 13
Manhattan tests
kaplan tests
1000 series