In the context of Digicel or mobile credit requests, "K33" typically refers to a specific amount of mobile credit, often denoting a value in local currency or a designated credit package. In some regions, "K" might represent a currency like the Papua New Guinean Kina, with "33" indicating the amount (K33 being 33 Kina).
However, the exact meaning can vary by locality and context. For the most accurate interpretation, it is best to consult the official Digicel documentation or customer service in your area, as they can provide specific details about their credit codes and offerings.