kawoh,
Varig/US is very sloooowwwwww to process. I had similar experiences...it might take months. I did the same with the 5 airlines * 55,555 but not all the airlines reported my RG number (some airports in Asia don't even know that Varig is part of the *A)
Smiles Center asked for the boarding passes. I sent copies to the Varig/NY office (Smile office in US is located in NY)
71 South Central Ave.
2nd Floor
Valley Stream, NY 11580
I follow-up with a call a month later (I think the number in NY is:1-800-990-5534) The person was actually able to go to my file and check it while I was at the phone. She told me that I should send the originals-- I took her name and I did send the originals . 2 weeks later, I follow-up with a phone call -- they told me that all OK and they sent the info to Brazil for posting. A month later I had all my flights. Remember, NY/Smile office is very small..probably no more than 2 or 3 people dedicated to Smile so if you manage this by phone after you send your letters is easier to follow-up and get results.
The good news for me was the credit was before they process the 55K promotion (just 15 days earlier). On December 15, they have posted all 55K for members that flew all 5 airlines since July. You may want to also request the credit of the 55K when you send your boarding passes since I doubt they will do it automatically.
Good luck!