H1B and H4 dropbox appointment or any other appointments?

I am looking for a dropbox appointment for my H1B and H4(wife) .
Has anybody been able to find any dropbox appointment slot anywhere in India(Chennai/Mumbai/Kolkata/Hyd/Delhi)?

Have been looking at cgi portal for close to a month(or more), twice a day?
Every time it just “there are currently no appointments available”. Did anybody have any luck?
@anil_am22 @Kalpesh_Dalwadi : Will appreciate if you can assist here. Thanks!

Unfortunately I dont have any suggestions as you are already following the process. Fyi, I have heard people book through unofficial agents/brokers by paying extra fees however I personally do not endorse such a route.