Courtyard By Marriott Hotels in Springettsbury Township

I booked my stay through Trip.com and was double-charged by Courtyard Marriott and Trip.com upon check-out: for anyone reading this, whenever you book through trip.com you should 100% ensure the hotel you're staying at DOES NOT also charge you! Upon catching the mistake on my credit card statement, I called the hotel and was put in a waiting queue and after 20 minutes I hung up and called right back and got through: there's obviously some issue with the phone system or monitoring. After sorting through the issue with the associate, she informed me they needed to get a temporary credit card number from trip.com before they could process my refund: THIS IS POOR CUSTOMER SERVICE as it was their mistake to charge me in the first place! The associate asked if I wanted to speak with a manager and I said yes and was put on hold again. Eventually the line picked up but I just heard background noise. All of this was two days ago: still no return call and no refund. I emailed Marriott corporate and they said they would follow-up. I've now spent an hour on this. It's clear associates at this location were not trained on how to handle 3rd-party bookings and good customer service.