What to do when selling company won't change delivery options so I can collect from FedEx location?

FedEx have forged a delivery collection & I don't believe they'll make it easy whenever they decide to make the next reattempts. If the workers really have it that rough, I thought I'd want to make it easier for everyone by collecting it. The trouble is the company I purchased my items from are the ones who can only amend delivery options as they're the registered customer assigned to the tracking numbers. They're not complying with the emails & their useless outsourced CS team is fobbing me off.

Will fedex arrange for this themselves after making a couple more failed attempts?