Tax Return was not all refunded?!

So I Filed my Taxes on 2/2/22. Filed everything was Processes that SAME DAY. I asked for the 21 day return into my Account. The IRS did not send me my return until 3/2/22. It was not the WHOLE AMOUNT that I was Processed for. I thought I’d give it a week to see if the rest would appear and It has not. WHO SHOULD I TALK TO IF THE IRS ANSWER WITH ONLY Machines?!?