I got a letter may 28 that I would receive my taxes in 6weeks,I didn't get it,then they sent a request to the processing unit asking them to release my refund,they say it could take 30 days,so what should I do,the 11th of August is the thirty days.

The IRS has a large backlog of amendments; you can call 1-800-829-1040 and ask about the status of your amendment.