Just recently had my 4th and 5th success with BRG albeit with some issues...

March 27th-29th at Doubletree Amsterdam was cheaper through priceline.com. Filled out the online form and was rejected due to not being able to find the lower rate on priceline. Also, they listed the lowest price they saw and noted it in GBP. Seeing this issue, I replied to the email with screen shots and mention of the incorrect currency. I then called the Diamond desk and phone agent confirmed she saw the lower rate I was seeing and placed me on a brief hold before coming back and stating she was able to get the rate approved. Shortly after the call, I got a reply from the BRG stating after re-reviewing it was approved with the new correct nightly rate.

March 31st- April 3rd at Hilton Amsterdam was cheaper through hotels.com Submitted BRG claim online and was approved. However, since I purchased a non-refundable rate, the hotel would have to refund the amount when we check in or check out. However, the amount they calculated to be refunded was incorrect. Refund rate they were claiming was roughly $80USD when the nightly rate difference was $30USD ($90USD for 3 nights) BEFORE the 25% off would be applied. So refund amount should have been $90USD + the 25% off nightly rate amount. Called the Diamond desk before replying to email and after 45 minutes of her trying to manually calculate the refund amount, she corrected the notes in my booking about the refund amount, however it was still an incorrect amount (she kept getting confused with the USD to EUR conversion). I politely accepted, hung up and called right back. Next phone agent had much more experience with BRG and in about 5 minutes had the correct amount calculated and updated my reservation notes with the correct amount for the hotel to refund me at check-in or check-out.

I apologize if that was hard to follow but I like providing thorough details for anyone else that may have similar issues.