Product: Debt collection

I find out in XXXX that Westlake Portfolio Management is stating that I owe them {$7700.00}. Because XXXX XXXX company went out of business. I called the in XXXX. I spoken to a customer service rep. I told the rep. I do NOT know who Westlake Portfolio Management is so can you please send me documents connecting with this debt. He basically told me to just pay the debt we do NOT have to send anything. He was very rude and offensive with his tone. I wrote total of 3 letters. I wrote two to XXXX XXXX, XXXX at XXXX XXXX XXXX XXXX XXXX XXXX, CA XXXX and one to an XXXX XXXXXXXX, XXXX XXXX, CA XXXX. I also send the letters Certified Mail Receipt with a  signature. This basically said, I am disputing alleged debt. I would like the name and address of the of the original creditor, long with an agreement with my original signature binding me to the alleged debt. I requested confirmation of account not crossed the status of limitation Period ( SOL ). I need evidence of your license number and your registered agent. The company Westlake Portfolio Management did not send me NOTHING!! They wrongful repossess my auto ( XXXX XXXX XXXX ) on XX/XX/2018. I spoke to XXXX on XX/XX/2018, he was polite and very helpful. I called back on XX/XX/18 and spoke to a supervisor in Servicing, XXXX. She basically said, Westlake Portfolio Management ( Debt Collector ) do NOT have to send me any proof of anything!! On XX/XX/2018 I spoke to XXXX XXXX, she stated, that it is under review. I get a call from they every morning now said you going to pay this debt. I asked they do they see the note in the system they say yes but you know this is you debt and you is going to pay it, Harassing! I did research Westlake Portfolio management. I know they do NOT have an license to operated in the state of Florida. I know they do not have the legal right to repossess my car. I know when they repossess my car the tow company ( XXXX XXXX XXXXXXXX XXXX XXXXXXXX ). They give me a receipt after I PAID for my belongings. The receipt stated, the Lien Holder is XXXX  XXXX! Now I know they did NOT have any legal standing to repossess my car. They ignore my written request to verify the debt and continue to collect. The requested was made in 30 days ( [ 15 USC 1692g ] 809 ( b  ). They continue to collect on the debt before providing verification after receiving my dispute letter, the debt collector must STOP collecting on the debt until I have receive verification. [ [ 15 USC 1692g ] 809 ( b ). 
To top it off : On XX/XX/2018 Friday, I was called into my supervisor office to find out they have been calling my job repeatedly non-stop. My supervisor XXXX said, this must STOP. She looked it up while I was sitting in her office. She said, with in the last 3 days I got 20 calls from this number, XXXX. I called the number to find out it was them ( Westlake Portfolio Management ). I spoke to XXXX on XX/XX/2018. I specifically told her to call me at my number and had her to repeated the the number twice. She ignored my request and called my job. My supervisor gave me a verbal warning. I want my auto vehicle back in my drive way. I would like to be compensated for ALL the money I had to use and ALL the inconvenience that it cause me. All the duress and harassment that Westlake Portfolio Management has cause me, my family and my job.