Yelp representative ad setup call

So about a year ago, not knowing what they were truly like, I wanted to grow my business with Yelp. I had the Yelp ads setup for the account and thought it would work in my favor. Then they started charging my account when they clearly said I won’t get charged until I reach a threshold. I got almost all the money refunded, not from them, but from Wells Fargo. But there is an amount of about 300 or so dollars that I have been trying to get a refund for ever since with no luck. Fast forward to this week where I get another Yelp representative to try to sell all the same things from last year. But this time I wanted to record it for proof. Got him to explain all the stuff that the previous Yelp representative failed to do. And I also asked him to remove my card off my account to which he made some lame excuse. Also have him on call trying to get me to pay for it. Is it ethical to use that recording in any way as proof? Or do I just keep pressing him about giving my money back through email so I have written proof? Open to suggestions on how to handle this situation