Tax Refund

Have used turbo tax  the last 5 years with no problems. This year filed again with turbo tax on Jan. 15, 2024.  Tax was accepted by the IRS on 1/18/24.  On 2/16 received a letter from IRS stating they are verifying my tax report for I should receive my refund within 60 days.  Here it is April 24 and I still have not recieved my refund.