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  1. Kroo Development Environment
  2. Cards.
  3. Card transactions.

Card transactions.

I don’t recognise a card transaction, what should I do?

How do I use my card with Transport for London (TfL)?

What is a gambling credit and when will I receive it?

How do flight ticket transactions work?

How do holding deposit refunds work?

How does Pay at Pump work?

What are delayed or offline transactions?

How do I report incorrect merchant details?

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