My wife and I stayed at Stowe Mountain Lodge for 3...

My wife and I stayed at Stowe Mountain Lodge for 3 nights the first week of May 2018. The resort is very nice, clean and with beautiful views but management could use a seminar in guest relations!
We paid for part of our stay with New England Inns & Resorts gift cards. This resort IS a part of this program by the website and New England Inns & Resorts personnel.
When we checked in we presented the gift cards but were told to hold them until check out.
At check out the people at the front desk personnel said that the resort did not accept these gift cards? I went on line and showed him that the resort was part of the program. We got the personnel from New England Inns & Resorts on the phone and they confirmed the gift cards.
The front desk person refused to give us a statement bill for our for our stay until they got a check from NEI&Rs???
After over 30 minutes we left with no bill statement?
A few days later we got a phone call from someone from the hotel, Logan, who said he was part of management. He reintegrated that until they got a check from NEI&Rs a bill statement would not be issued to us. Also he was quite rude to my wife in this call.
It is now May 23 and still No Statement .
We stay in hotels/resorts over 120 nights a year and have never experienced such an attitude!