Under Kenyan property and tort law, a debtor's guarantor is not automatically subject to self-help distress or harassment at their place of employment. Furthermore, a shop owner/occupier has a legal right under section 3 of the Trespass Act to use reasonable force to eject unauthorized persons who refuse to leave private business premises after being requested to do so.
Entertainment and general information, not legal advice. For advice on your own situation, speak to an advocate.