Spammer with questionable ethics

This business are spammers, despite numerous requests to remove my company email addresses they just keep sending spam. Any company that cannot use a proper email marketing system are surely ********s, especially when emails as well as personal phone call do not get them to stop spamming. This is obviously an organisation who though they purport to do business courses have absolutely no clue how to do ethical business. I would also view the only other review as highly suspect and I'm sure any business who reviews themselves has a high degree of hubris.