After you file

I only received half of the third stimulus amount today 3/17.  I also double-checked with the calculator and gives me $5,600, Married Filing jointly, plus two dependants,  but the IRS only deposited $2,800, and there is no information at all if there will be a second deposit for the same third stimulus. Also, this year, I electronically filed my return since Jan 31, it was accepted on Feb 12, but only the State  (Ohio) deposited their refund, but the Federal refund states "Your tax return is still being processed." This same status has been for weeks, and there is no way to call and talk to an IRS agent to find out the reason for this delay.

 

Does anyone know who to contact for this, find out if the TAXEIP3 will have a second deposit, and also to find out why my Federal refund is taking that long?