connecting with samba: privileges issues windows server
If I understand your question correctly you are able to mount the folder via samba, but you can't read the upper folder within the share.

To access the folder you have access to you can go directly to the folder using the 'Go to Folder' option in Finder: Click 'Go' in the menu bar and choose 'Go to Folder':



Or hit Command + Shift + G.

I assume your samba share is mounted as /Volumes/home/my_folder, so enter this path in the text box that shows up and hit enter. Finder should open a new window showing your folder within the share.

If your share is mounted on a different path you could check the folder /Volumes for its name, using the same method as described above.