Legal Action- Billing Issues

I discontinued my service April 27, 2025. I received a bill for May, which I paid and figured was a prorated charge. However, I was then billed for June. I contacted an xfinity assistant who told me to ignore the bill and that they could see my service was fully cancelled. I then received an email a few days ago that my June bill is past due and is about to incur late fees. I have now just received an email stating that my JULY bill is ready and says I owe $206 in total on my bill (June+July payments). I have spoken to numerous xfinity assistants via direct message through the app who have ensured me that my service is fully cancelled and that I will stop receiving these. I was also told on 4 different occasions throughout the 3 months that I would be receiving a credit of $103 “within 4-5 business days”. On one part of my app it shows my service is discontinued, on another part it states I owe $206, and on another it states my bill is $0.00 and that I have $116 in credits. I will be taking legal action if this is not dealt immediately with as I have screenshots of all of this as well as all my transcripts with xfinity employees. Do not tell me to “message an xfinity agent” as I have done so  5 times now.