I've been selling stuff on these resell apps all day and going back and forth with people forever on…

I've been selling stuff on these resell apps all day and going back and forth with people forever on this huge clothing lot for preteen boys that my son has outgrown. over 50 articles of nice clothing for 40 bucks and tons of ppl are messaging me and saying they want them and not getting back to me when I ask them where they want to meet or when they want to get them. 😠😠😠😠😠😠