As of December 2017, Snapchat offers two types of accounts: personal and business. Personal accounts are free, and business accounts have a monthly subscription fee. Subscribers to Snapchat can offset the cost of their subscription by signing up for Snapchat's offsetting service. This service is available to anyone in the United States who has a Snapchat account and is 18 years of age or older. When you sign up for the offsetting service, you will be asked to provide your Social Security number and date of birth. Snapchat will use this information to verify your identity and determine your eligibility for the service.
I don't know much about offset snapchat services, but I imagine they are some kind of service that helps you manage your Snapchat account.
In conclusion, offset snapchat services are a great way to save money on your phone bill. They allow you to use your phone for less money, and you can even get discounts on your service if you use them.