Comfort Suites Burlington Washington Near I-5

My spouse and I, both retired, recently stayed at Comfort Suites Burlington Washington during our holiday to the western part of the State. We checked in with my service dog for seven nights without any issues during the initial check-in. We provided information about our service animal and filled out the pet paperwork. We were informed that there would be no pet fee charged, which was as expected. Caleb was the person who helped us with the check-in process.
However, upon entering the lobby after getting our belongings, our dog barked. Caleb stood up and immediately claimed that our dog wasn't a service animal because service animals do not bark. He then proceeded to accuse me of lying and scamming and demanded that we prove that our dog was a service animal, or he would charge us a pet fee. When I informed him that I didn't have any proof to show because the law doesn't require it, he continued to insist that he knew the law better than me and that I was a liar and a scammer. He even threatened to charge me the pet fee if I didn't show him the "little white card." I was stunned by his rude and inhospitable behavior, and he eventually charged us a pet fee after we had already checked in. This was an illegal charge as per the Americans with Disabilities Act.
Caleb's behavior didn't end there. Every time we entered the lobby, he would either give us evil stares, animated laughter, or finger-pointing, making us feel harassed and bullied. This was a violation of our civil rights.
On the day of our checkout, I noticed that we had a flat tire. I had changed it to the spare and didn't think much of it at the time. However, when I took it to get repaired, I found out that it had been slashed, perhaps with a box cutter. I knew it wasn't a random act.
I contacted the hotel's property manager, Scott Turbush, through email, hoping to resolve the matter. However, he was unhelpful, stating that since we didn't complain during our stay, it was our fault. He offered to refund the pet fee as compensation, which was an illegal charge to begin with. I requested a phone call to discuss the issue, but he refused.