Bests & Worsts Reviews from Amazon

I am not sure when, or if, I actually signed up for this card, but I know I had seen it as an option when checking out. So I get a couple of calls from Sycnrony Bank saying I need to call them back. I don't even know I have a Syncrony account, so don't return the calls. Then I get a past due bill from Amazon. I know that I had paid my regular Amazon statement a couple of weeks earlier. I look closer and see that this is a different account number. So I go to Amazon to see which account is which, and can't get the information. So I call the phone number on the statement to find out what the deal is. After several prompts, I was told to call a different number!!! I did get a helpful gentleman on the end of the line, and he told me that my account was past due and they had sent a letter to the credit bureau. I asked him what this account was and he told me Synchrony. I told him I didn't know of such an account and don't remember any Synchrony usage in the past. He said that all Prime members "get" a Syncrony account!!! I also asked him what the purchase was, because I didn't remember any purchase. He said it was my Prime membership. I said why did they put it on this account and not the one I always use. He said he had no idea because they usually use the Visa account. So to make a long story short. They made an unapproved charge to an account that I "got" for having a Prime account. I don't believe they sent a "first" statement, because I didn't get it. To top it off they report me for a late payment, which I have never had. I may get a bad rap on my credit because of their actions. If my score drops, I surely will pass this on to the credit reporting companies.