I made an order and during checkout I chose to pay extra to have them guarantee 3 day delivery. When they shipped it, those chose to ship it with the slowest method available (which should have been ground) because they saw it also fit the 3 day window for my region. I called to get a refund issued since there is no service guarantee for FedEx Express Saver, but they refused to issue a credit even though had I chosen ground at checkout, it would have been free shipping and shipped the same way.
I believe they should have shipped it with a 3 day guarantee since that's what I paid for. The likelihood with FedEx is that I will not get it in time and I now have no recourse.