Mine is SiriusXM. When I feel like I want to con them out of trials with multiple accounts (because they don’t really keep account information for too long), I have to go to their website because their app is essentially useless unless you’re subscribed. But their website is awful because of not design alone but function. Their lookup tool for license plate, VIN or radio ID never works so it’s pointless to try. They don’t make it apparent that you can select the stream access, they make you have to waste time before you figure that out.
And their tech support? Awful.
I don’t really know if it qualifies as worst, but Costco’s website is the slowest website I have used in recent history.
It’s so painful to use. It takes three to ten seconds for each click to take effect.
Drives me batty.
But also, ebay has gone in the shitter. Amazon is just the fucking worst. Google itself is terrible because its results lie to you and it will never show you the website you’re looking for, no matter what, because as long as you don’t find the website you’re looking for, you’re staying on Google.
Every time I use Mcmaster-Carr’s website, I weep at the lost potential for places like Costco. I wish every store’s website was like Mcmaster-Carr.