H1B, H4 Visa

My Name IS Sriram Rao Takkallapelly. I did my Master Degree in USA. My H1B got picked in 2017 and got approval in Feb 2018. I got two approval Notices (I-797A and I797C) With Same Receipt Number but Different Expiry Dates.

I-797A Valid Dates: 02/21/2018 to 09/12/2020 (Came from My attorney)
I-797C Valid Dates: 02/21/2018 to 02/20/2019 (Came from My Employer).

Note: On I-797C it shows "THIS NOTICE DOES NOT GRANT ANY IMMIGRATION STATUS STATUS OR BENEFIT". and "This is a courtesy copy, not the official notice"

We thought I797A will be the official/Main one.

In 2018 August I went for visa Stamping Interview in India and I got stamping only up to

02/20/2019 (I-797C also Expires on Same Date)

But at the port of entry I showed I-797A Document, and they gave me I-94 up to 09/12/2020 (I-797C also Expires on Same Date).

I contacted My Attorney and he told me Stamping up to 02/20/2019 might be clerical Mistake as I got I-94 up 09/12/2020 (As per I-797A)

Recently on March 7th My Wife Went for H4 dependent Visa Interview in Hyderabad (India). Her visa was rejected and consulate people sent an Email Saying that

 "Please be advised that your petition expired. You or your employer need to contact USCIS to get your petition updated. Until then, we are unable to proceed with your visa application"

My attorney contacted USCIS on March 14,and they Said the will Send New document. After 20 days we contacted USCIS again as we didn't receive the document. They said they have Send New document on March 18 but we didn't receive any. we open another Request for New document, Still we didn't receive any.

Yesterday My Attorney contact Supervisor in USCIS and they Said they will forward this Inquiry (about I797A and I797C) to H1B department and it takes three weeks for the reply.

I don't know where it is going.

Can you Please advise on this Scenario.