I missed the gullak twice becoz of some issues and heard many also missed the gullak after transaction.
Here is the solution update the app to latest version 20.5.2 and you will see the gullak statement above in the history section and there u can check all the gullak that are somehow missed
I got my two gullak dated 19 sep 2019 and 2 Aug 2019
https://www.desidime.com/discussions/solution-those-who-missed-gullak-earlier-after-transaction-in-mobikwik?page=1#post_6446400
Sambhal ke koi gullak phod na de 😀😀