As a Customer Support of one of the largest companies in the hotel industry I had different roles for the same job (B2B and B2C).
As a B2B Business Support my role was: handle cases via phone calls and emails of hotels requiring help with overbooking situations, relocations, closure due to weather conditions, pricing changes, fraud, law enforcement for customers with bad behavior, property damage by customers, local laws and hotel policies and any other help we could provide in order to protect the hotel customer service quality.
As a B2C Customer Support my roles was: Helping customer with relocation, online payments issues, no show refunds situations, check in and check out issues, warranty deposit, fraud situations and hotels reviews requests.