I think mv is only move on remotesite.
I'm pretty sure that
\\ess-raddon\e\phonecalls is not a valid path.
Open the folder in the remote panel of WinSCP GUI and use the exact syntax you see on the top of the file panel.
option batch abort
option confirm off
mv "*.*" \\\\ess-raddon\\e\\phonecalls\\\*\.\*
fails and gives
Error moving file 'BUS4596555' to '\\ess-raddon\e\phonecalls\*.*'.
No such file or directory.
Error code: 2
Is it because i'm trying to move folds and not files?