Product: Debt collection

The following might not be in the correct order, however the call was recorded and you can request to hear that conversation for exact verbage. 
I received correspondence via a letter in the mail from Linebarger Goggan Blair & Sampson, LLP yesterday, XX/XX/2023, I immediately called to inform them I was in receipt of their letter stating I owed an amount of {$86.00}. I asked for the name of the person I was speaking with and he replied with XXXX. I attempted to explain the error in receiving that letter, and he interrupted me and asked to verify some information. When I didn't answer him with what he wanted to hear, he got rather abusive with his words and telling me that the vehicle was mine. I insisted that it was not and there was an error. He them put me on hold for a longer period of time and when he came back he said he verified that the debt was owed by me. The information he was asking for was an acknowledgement of who I was and the debt owed of {$86.00}. I tried to explain that I did not owe the money he was stating I owed. He then jumped in and said how did I want to pay the debt and if I wanted to use a Visa or Mastercard etc. I said the debt stated was not my debt. He verified an old address of where I had lived and continued to state that I owed the debt to XXXX XXXX. I tried to explain the license plate on the letter was not mine. I told him that I had an account with XXXX XXXX and it was in good standing with a sufficient balance for future tolls accrued. 
He put me on hold for several minutes and when he returned he stated the car license plate was in my name. I tried to explain the license plate could not be in my name and it was an error. He continued to insist the debt was mine. Again, I reiterated that it was not my license plate and not my debt, I asked who his supervisor was and after hesitation and asking why I wanted to speak with his supervisor. I explained that I wanted to let his supervisor know how he conducted himself and how rude he was to me. Rude is not a proper word for his demeanor! After several attempts for him to decipher how to spell his supervisors name and hesitant to divulge that information, he did and it was XXXX XXXX. I immediately again stated it was not my debt and hung up. I would also like it to be known that my husband was in the room with me and I had the call on speaker hone so he could hear my entire conversation, This morning, I immediately called the toll free number and spoke with a woman named XXXX, who I might say was extremely professional and after a few minutes transferred me to a person named XXXX XXXX as XXXX XXXX was not answering her call. After explaining the issues and also identifying myself, I explained the same thing I had explained to XXXX. He said that he would review the call an get back to me. I advised him that I was filing a complaint against this person named XXXX and the Colorado Attorney Generals Office for Fair Debt Collection Practices Act for investigation, which I am doing right now. 
No one should be spoken to the way XXXX spoke to me. There were other ways to get his point across. He also was extremely rude when he was asking me if I wanted to be taken off their automated calling system by insisting I had to answer to him. The last time I checked, he wasn't one of my parents and hung up on him. As I said, alot was said and I might be leaving something important out from the conversation. Thank you for your time and I look forward to hearing back from you.