refund

I filed my return from turbo tax on 01/31/2024. It was a simple 1040SR return standard deduction. We received a notice they wanted copies of W2 and 1099s. So was faxxed them No answer. I called a number and they suggested sending it agan. Send what was required 02/20/2024 and again on o4/23/2024. No refund. What can I do????