Answer:
Support activities
Explanation:
Support activities are carried out by the business but are not the main revenue sources, instead they complement the business's main activities.
In this case, Chat Zone's main activity is telecommunications, but it is really suffering due to its poor internal procedures (probably customer service or unnecessary delays) and those internal procedures are support activities since the main activity is providing cell phone services or other type of telecommunications service.
Once you know what your problem is, the next thing is address that problem by doing something to correct it.