they promised the fees were going down but went up by 3-8%
Just curious how you're calculating 3-8% higher fees? There have been countless threads about this topic and the general consensus is that fees work out to be about the same, with maybe a 1-2% +/- variance. The biggest difference now is they eBay takes your fees all at once, up-front at the time of sale instead of invoicing you at the end of each month. The old system where PayPal fees and eBay fees were separated made it feel like they were less, however for anyone tracking sales/expenses themselves, fees were pretty much the same. Also I don't ever recall eBay saying fees were going down, only that sellers shouldn't notice a difference moving to managed payments and may (key word) possibly see reductions.
The conversation did not end well.
When you say the conversation didn't end well, do you actually mean to say that you lashed out at the rep? If so, eBay has a zero tolerance policy against abusive behaviour to both its members and employees, regardless of who is right or wrong. Any signs of aggression can very easily get you banned or restricted.
I asked for a partial refund of $3.68 on fees I thought were unjustified
Were these fees actually not within eBay's fee policy and charged in error, or were they simply for something that you felt you shouldn't have been charged for? There's a big difference, especially if the fees you are trying to have refunded are within their standard fee structure. If they are, then eBay has no obligation to refund you, regardless of how much you disagree with the fees.
