**Invoice Design Breakdown**

1. **Header Section:**
   - Title changed to "Monthly Statement."
   - Remove specific brand logos; create a neutral logo (e.g., a simple geometric shape).

2. **Contact Information:**
   - Keep a placeholder for "Service Provider Contact Details."
   - Alter phone numbers to generic format (e.g., "1-800-123-4567").

3. **Contract Information:**
   - Rename "Contract No." to "Account Number."
   - Change the date format to MM/DD/YYYY.

4. **Billing Period:**
   - Modify "Days 31" to "Billing Cycle: 30 Days."

5. **Payment Due Date:**
   - Change "Due Date" to "Payment Deadline" with a different date format.
   
6. **Charges Breakdown:**
   - Change "Electricity Usage" to "Service Charges," adjusting values.
   - Replace other charge descriptions to generic terms.

7. **Total Amount:**
   - Modify "Amount due" to "Total Payable."

8. **Comparative Data Chart:**
   - Alter bar chart to a line graph. 
   - Change the title to "Usage Trends over the Past Year."

9. **Notifications Section:**
   - Revise information to general payment and service instructions.

10. **Footer Section:**
    - Remove brand references; retain "Issued by" with a placeholder name. 
    - Adjust design elements for consistency with the new style.

**Colors and Fonts:**
- Use a simple color palette (e.g., blue and grey).
- Choose a clean, modern font for readability. 

This design maintains the functional layout while ensuring it is original and devoid of specific brand references.