Unfair Treatment

I have been getting calls and emails from this company saying its on behalf of HomeChoice. I requested that they send me a statement of what I'm currently owing since I've been making payments and not receiving any receipts. I also requested them to update my payments on credit bureau and still that hasn't been done. My question is why are they not responding to the emails sent to them. They are trying to reap people off, cause they also want customers to pay for debts that have been prescribed.