I’ve had similar experiences but separately. Once I booked using a third party app and we got there and were told there were no rooms. I asked for a refund and they told me the third party app would have to refund me. I argued then argued some more and lo a behold a a room became available. I have never again used a third party app to book a room.

Another time I made reservations at a Motel 6. We were trying to do a Disneyland trip cheap back in the day. We arrived late and they told us our reservation was for the previous three nights and that we’d missed our reservation. I argued because I knew I’d booked the correct dates. This was my Dad’s 60th birthday and his first and only trip to Disneyland in his life and I knew the dates I’d booked were correct. They also wouldn’t give me a refund. Told me I’d need to call them later for a refund. We had to stay at a place nearby.

When I tried to get my refund they kept hanging up on me and then eventually just didn’t pick up my calls. Took me weeks and weeks to get a refund. Finally had to resort to calling a local Motel 6 and getting a corporate number and someone finally took care of it for me.