I had a similar issue when I hit gold this year. Hit my 60th segment on a DTW-LAS flight, returned two days later, but my status had not yet been changed. On my return LAS-DTW-GSP I was credited silver bonus on my 61st and 62nd segments. Agent on the phone told me that I would not be awarded Gold bonus. Wrote into the website and was quickly reimbursed the correct bonus. If you haven't received a response I'd try writing in again. The threshold for your status bonus is the mileage/segment level, not the time it takes them to "process the paperwork".