exemption, you must provide us with a valid exemption certificate. Tax exemptions generally won’t be applied retroactively.
Surcharges
You agree to pay the surcharges, fees and other charges that we assess to recoup our government costs or costs of complying with certain government programs (“Surcharges”).
Surcharges aren’t taxes or government mandated charges; they’re charges we choose to collect from you. Surcharges are subject to change, sometimes on a monthly or quarterly basis. Examples of Surcharges include, but are not limited to: Universal Service Fund, E911, Federal Programs Cost Recovery, Federal Wireless Number Pooling and Portability, and gross receipts charges. We will make efforts to provide you notice of any changes to Surcharges in a manner consistent with this Agreement (see “Providing Notice Under This Agreement” paragraph). However, since most Surcharges are based on amounts set by the government or based on government formulas, it will not always be possible to provide advance notice of new Surcharges or changes in the amount of existing Surcharges. Information on Surcharges is provided during the sales transaction and is available at our Web site.
Disputing Charges - You Must Still Pay Undisputed Charges
Any dispute to a charge on your bill must be made within 60 days of the date of the bill that initially contained the charge. Disputes can only be made by calling or writing us as directed on your invoice or elsewhere. You accept all charges not properly disputed within the above time period – undisputed charges must still be paid as stated on your bill.
Protecting Our Network & Services
We can take any action to: (1) protect our network, our rights and interests, or the rights of others; or (2) optimize or improve the overall use of our network and Services. Some of these actions may interrupt or prevent legitimate communications and usage – for example, message filtering/blocking software to prevent SPAM or viruses, limiting throughput, limiting access to certain Web sites, applications or other Data Content, etc. For additional information on what we do to protect our customers, network, Services and equipment, see our Acceptable Use Policy and Visitor Agreement at our Web site.