I contacted USCIS and told them that my H4 to F1 case was approved on June 28 but still i did not get I-797 in Mail. They responded that we have already sent I 797 on June 28, there should be missing mail or stolen etc.
Then i asked for solution, they said you have to submit form I-824 to request for duplicate I-797. But the catch here is it costs approx. $500. According to me this is clear case of asking for more money from us.
Have you ever faced such situation? Do you have a better way to tackle it without spending such a huge amount to get I-797? Please reply