I've only made a few chargebacks but each time it was really easy. I've never had to provide any sort of documentation and have gotten the money back quickly each time.
The most recent time was with a company that wouldn't honor their refund policy. They were awfully rude over email so I made sure to take screenshots of the policy on their website in case they disputed the chargeback and/or changed the wording on their site. Turns out, there wasn't even an option to upload that information when I filed with my credit card, and I won the case without doing anything further.
Where did you get your credit card? Name-and-shame is important when dealing with corporations, but so is name-and-praise for the few that actually work correctly.
USAA credit cards have been fantastic for me over a 31 year period. In that time, I can only recall 3 chargebacks and all were decided in my favor quickly and easily. Other service is also great; cash back levels are just “okay” but I’m not giving up convenience and USAA service for 50bps more cash back.
The most recent time was with a company that wouldn't honor their refund policy. They were awfully rude over email so I made sure to take screenshots of the policy on their website in case they disputed the chargeback and/or changed the wording on their site. Turns out, there wasn't even an option to upload that information when I filed with my credit card, and I won the case without doing anything further.