While a complaint investigation is pending, the Subscriber shall not be required to pay the disputed charge or any associated late charges or penalties; the charge may not be sent to collection; and no adverse credit report may be made based on non-payment of that charge. Pursuant to Pub. Util. Code § 2889.9(g), Billing Telephone Corporations, Billing Agents and Service Providers shall provide all requested information and shall cooperate fully with the Commission's staff in any investigation and prosecution.