The situation you describe may indeed be considered landlord harassment under California law, even if your mother is the landlord in this case. Landlord harassment typically involves actions taken by a landlord or property owner to make a tenant's living conditions unbearable or to force them to move out. This can include demanding money without notice, refusing to discuss bills, or attempting to change locks without proper eviction procedures.
In California, tenants have rights, and landlords must follow specific legal procedures if they want to evict a tenant. Changing locks without proper notice or an eviction order is generally illegal.
You should first gather any evidence you have of the harassment, such as text messages or communication regarding money requests. Then, consult with a local attorney or a tenants' rights organization to understand your rights and options. You may need to take legal action to regain access to your home and address the harassment. If your mother is acting as your landlord, the consequences could include legal penalties for unlawful eviction or harassment, and you may be entitled to compensation.
Seeking legal advice promptly is essential to protect your rights and resolve the situation effectively.