I'm talking to a USPS agent on the phone about a previous phone conversation:<br/><br/>"The 1-800 customer service agent told me I <b>cannot</b> pick up the package." Or<br/><br/>"The 1-800 customer service agent told me I <b>couldn't</b> pick up the package." <br/><br/>I would use the first one but it seems the 2nd is correct?<br/><br/>I'm trying to pick up a package tmrw.