Monitoring customer relationships is the responsibility of every financial institution. In short, regulations oblige us to understand where our clients' money comes from or how our clients generated their wealth.
That's why we sometimes have to ask our customers a few questions or ask for documents to confirm the information provided. When we decide to contact, we only ask what is necessary to complete the verification.
International regulations have been prepared based on different situations, to protect customers and payment systems (including the institutions involved) from threats such as money laundering and terrorist financing. Verifications of the Source of Funds are routine and can occur at any time.