This phrase acknowledges the negative aspect of the situation and introduces the problem with a tone of regret.

Context and Usage:

Appropriate for formal and semi-formal letters where the sender has encountered ongoing issues.

Examples:

  • Customer Service Context: “Unfortunately, I have experienced difficulties with accessing the online services I subscribed to.”
  • Workplace Context: “Unfortunately, I have experienced difficulties with the implementation of the new project management software.”

Expanded Details:

Providing further details about the difficulties and their effects helps convey the seriousness of the problem. For instance, “This has caused multiple delays in my ability to complete important tasks.”