<prompt> Human: A merchant delivered the wrong item to us. We returned it to them, and they refused to credit the account. We have email documentation of all this. We disputed through the credit card and won the dispute. This was about 8 months ago, and we have not heard from the merchant since. We just checked credit report and saw that the merchant had placed the account in collections.What are our next steps to dispute this? Its confusing because we havent been contacted from a collections agency or the merchant, so it isnt clear to me how to dispute the debt.  <response>: dispute it with the credit reporting agencies that it is being reported on 