Priceline complaint: Poor Customer

I had a trip scheduled for a trip for Orlando to Houston on 7121 @515pm United airlines ation 1. Returning 7521 @605 am by Spirit Airlines Confirmation 2
Both had the option to cancel. I wanted a later flight for 7521 so I wanted to cancel it and rebook because they were the same trip but separate flight ation s. I requested to cancel using my trip , and only the second flight ation , email, and phone number. Priceline canceled the wrong Flight which they canceled Orlando to Houston, which was the same trip but a different flight ation . I called 1037 pm and waited on hold for 2.5 hours only to speak with a rep at 1253am, who had no idea how to help me. I asked her can she get me over to a supervisor and she transferred me back into a queue of 2hours 37 minute hold. Finally, I spoke with Liz who was rude, unempathetic, and no concerned to help. She told me over and over how I was wrong and did not do it right. at the end of the call, it showed that it was a Priceline error because the second flight could not be canceled out by Priceline. They canceled out the first flight due to them not being able to cancel the second and me having to call Spirit. So I set on the line going back and forth with the rude lady only to clarify to her that it was not done in my error. I canceled it out 4xs after the fact and still nothing happened, no email nothing but bc the first flight Confirmation Orlando to Houston did have the ability for cancelation option, it canceled it out. This lady still refuses to apologize. I made it clear to her it wasn’t about the money because I have insurance on the trip. It was her and the rep’s audacity to state it was my error I did it wrong after advising I did no such thing. I even emailed Supervisor Liz a screenshot of my screen saved data on my computer, which showed no error on my part. I was on the phone with this company from 1037 till 3 am. It’s 349 am and I am up writing this letter, complaints online, blogs, every social media site, and will continue. I have never been treated this way in my life. It was never about money just the point it was a Priceline error and instead of trying to fix and resolve, I was told I did, I did, I did.