I stayed at Bangkok Pullman Kingpower. I also tried to use the BPG. Took the screenshot before booking, read the T&Cs, and then booked through Accor.
I filed the claim and at first got told rejected. I was very annoyed and wrote back, explaining how I was fulfilling my obligations and how the booking was an exact match. She said she'd get back to me. No reply so I called a few weeks later, and the guy on the phone was helpful and said that it was valid, and that they were talking with the hotel or something like that. He said he would escalate the case to a higher division because of the delay.
Well, it's now 3 months since my stay. I called back and spoke with the customer service agent, who told me that it was with the BPG team. I said, does it normally take this long? She said, it was up to the BPG team and the hotel to resolve the issue, and they would contact me if it was successful - if I didn't hear anything, it's because it wasn't successful, or they were still considering it. Furthermore, because it was with the BPG team, her customer service team had done their duty and that it was basically no longer their problem.

Wow, talk about bureaucracy, and lack of customer service. 3 months to "consider" a claim? I don't think so. I will hassle them again next week, because I'm tired of BS and people wasting all my time because they can't or won't do their job properly or take responsibility for their errors. /endrant