After you file

I got the  12 C letter  asking for info and I responded  quickly  providing the requested info and have heard nothing from the IRS  what is going on  been waiting  for the refund  responded to  the requested on 06/03/22   via  certified mail which was received  not sure what the hold up is  never had any issues before  and   Turbo Tax  requested payment I paid them  instantly  they were suppose to take it out my refund  I guess they did not want to wait.  I do not  get it ?   What  is the  truth behind the   12C letter...  Had I not responded then what  because I responded  and still nothing  ...