The Customer Loyalty Specialist (CLS) is a professional certification and training program for customer service professionals and managers offered within the Global Training & Ceritification Institute. Members of CLS Designation Program include those who work in customer roles, small business owners, and those looking to work within customer service jobs in the near future.

The CLS is sponsored and was created by the G.T.C. Institute in order to offer a credible certification program for professionals which can be completed from anywhere in the world and is offered 100% online. The CLS is the #1 online certification program for the customer service industry and is earned by both seasoned industry professionals as well as those looking to work in the field.

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