I had exactly the same experience as you and I had to argue very seriously with the customer service over the phone that it was unbelievable to me to think that it's the role of the customer to define the format of the invoices issued by their hotel I was so upset that finally, they put me on hold for a few minutes and they contacted directly the hotel on another line to have confirmation on the rate, number of nights, etc. After 5 minutes, he came back on line and said to me that everthing was OK and that he was crediting the points ^. So OK at the end but the amount of efforts needed is amazing !