Protecting customer privacy is a very important part of customer service. When you gather information from your customers, you usually get the basic information such as name, address, and phone number. You may also get more personal information such as social security numbers, credit card numbers or bank account numbers to process payments. Depending on the type of industry, you may also collect insurance information, health information, or other sensitive information. Your customer needs to know why you are collecting this information. Furthermore, your customer needs to know if you plan to make their information available to other companies, and what information you intend to share. If they feel that their information is too personal to share, or they don't want to be contacted by other companies with sales pitches, they need to know that they have the ability to "opt-out", which means to deny your request to share their information. If a customer agrees with having their information shared, they need to know that if they have a complaint about the companies that are contacting them, that their complaints would be treated with urgency and respect.