Another recent example that proves that several things might go wrong on a BPG claim although I know that the mistake has been made by the hotel and not by IHG's BPG desk.
I am pleased to hear that your claim was valid for Best Price Guarantee. I refunded the deposit from your reservation and modified it to complimentary stay. Your should see the refund back to your account within 3-5 business days.
Obviously I prefer reimbursement after the stay but I'd like to give kudos to the guest services manager for her quick reply. Howsoever instead crediting the money on my card I was charged again and again (with a slightly different amount).
To prevent confusion, the amount on the right is in Euros.
Not that big of a deal. The hotel will solve the problem and the rate was quite low priced as well. Nevertheless imo a very good example that all bets are off on a BPG and impatience ain't helpful.