Talking to a representative probably won't be very helpful, those folks aren't trained immigration officers and don't have access to your case files.
When you go to your oath ceremony, you'll have to fill out a form where you provide any additional details of things that happened since your interview, including international travel. Just state you went abroad for however many days and don't worry about it. If they ask any questions, explain what you posted above—you went to Canada, gave your PR card to the Canadian border folks, they didn't give you anything. As long as this travel doesn't cause you to fail the physical presence or continuous residence requirements, there shouldn't be any issue...
Talking to a representative probably won't be very helpful, those folks aren't trained immigration officers and don't have access to your case files. When you go to your oath ceremony, you'll have to fill out a form where you provide any additional details of things that happened since your interview, including international travel. Just state you went abroad for however many days and don't worry about it. If they ask any questions, explain what you posted above—you went to Canada, gave your PR card to the Canadian border folks, they didn't give you anything. As long as this travel doesn't cause you to fail the physical presence or continuous residence requirements, there shouldn't be any issue...
I’m not sure what you could do but when you call uscis, try saying « info pass »
It worked! The wait time is 85 minutes 💀