Shipping label blacked out. Spent over 6 hours trying to resolve No resolution

I am a Comcast customer for over 23 years with my Internet. I just transferred two phone lines over to Xfinity mobile. I got an iPhone 17 for my daughter and I got an iPhone 17 Pro for myself. The Xfinity store rep gave me a $700 credit to trade in my old iPhone 13 Pro Max. He said I would receive a shipping label. Well, I received an email that said trade-in details and I clicked on it , There’s a spot where you can send your phone in and print the label that print label was blacked out so you can’t click on it. I was on the phone with customer service for two hours. This rep had chickens or roosters making noise in the background. He was not able to help me I gave up because I was absolutely exhausted. I went into an Xfinity store. They could not help me and they couldn’t figure out how to print a label and did give me a case number. I was there for two hours. Then I was on the chat with Xfinity for over an hour and a half. No one can seem to help me. I have the Xfinity mobile app. I went through the steps that they tell you to do. Nothing will let me print a label. I can’t even see a label. I’ve gone to xfinitymobile.com I have done everything. This is what they do to [Edited: "Language"] and not give you a credit for your trade-in. I have two days left and I am ready to give my iPhone 17 Pro back and tell them to [Edited: "Language"]. This is absolutely unacceptable. I am so disappointed. I switched from Verizon because they price gouge. I’m sure T-Mobile is not much better, but that is gonna be my last option. I am also ready to get rid of my Xfinity Internet after 23 years and go to frontier. I don’t know how they can do this to people.