3.4.7 Any mistakes, accidents, omissions, interruptions, delays, errors or defects in transmission or service which are caused or contributed to, directly or indirectly, by an act or omission of the Customer, by others, through the use of Customer-provided facilities or equipment, or through the use of facilities or equipment furnished by any other person using the Customer's facilities, shall not result in the imposition of any liability upon the Company. The Customer shall pay to the Company any reasonable costs, expenses, damages, fees or penalties incurred by the Company as a result thereof, including the costs of any local exchange company labor and materials. The Company shall be indemnified, defended and held harmless by the Customer against any and all claims, demands, causes of action and liability relating to services provided pursuant to this agreement, including payment to the Company associated with reasonable attorney's fees.
 

3.5.1 Service shall be provided and billed for on a monthly basis. Payment is to be made to the address designated on the invoice or such other location as the Company may direct in writing from time to time. In addition to the charges for the Company's services, the Customer shall pay any applicable federal, state or local use, excise, sales or privileges taxes resulting from the services furnished by the Company. Such taxes shall not be counted toward the attainment of any volume or revenue commitment and will not be discounted.

3.5.2 The Customer is responsible for payment of all charges for service(s) furnished by the Company. This includes payment for calls or services (a) originated at the Customer's number(s), whether authorized or not; (b) accepted at the Customer's number(s) (e.g. 800 Service and collect calls); (c) billed to the Customer's number via third number billing, a calling card, a company-assigned authorization code, travel card number, or other special billing number; and/or (d) incurred at the specific request of the Customer.

3.5.3 A Customer is responsible for payment for all calls placed to or via the Customer's telephone number(s).  This responsibility is not changed by virtue of any use, misuse, or abuse of the Customer's service or Customer provided systems, equipment, facilities or services interconnected to the Customer's Service, whose use, misuse or abuse may be occasioned by third parties, including, without limitation, the Customer's employees and members of the public, including such persons who dial the Customer's 800 number by mistake.