The following methods are usually used to solve this problem

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Spot checking : listening to and evaluating a small percentage of calls based on a random sample. This method reduces the cost of data processing, but reduces the accuracy of the analysis. Finding growth areas is only possible if the circumstances are so fortunate that the call being listened to is the one that provides the information needed.
Increase in number of employees : hiring additional employees to increase the volume of calls monitored. Increases the costs of salaries and training several times, creates additional operational resources, but also really increases the effectiveness of control.
Recording all calls for subsequent analysis . This method allows access to all data, but requires significant costs for storing data and its subsequent processing. Ultimately, additional people are needed to analyze the recordings again, who will be engaged in this task.
3. Biased quality assessment
The personal factor often affects the objectivity of the turkey mobile database operators' performance evaluation, and the human factor can also lead to errors. For example, managers may be biased towards certain employees, which can lead to an unobjective evaluation of their performance. Such situations reduce the motivation of employees and their trust in the quality control system.

To avoid such situations, managers resort to the following methods:

Establishing clear evaluation criteria : standards and checklists are developed for evaluating calls. This helps standardize the evaluation process, but never completely eliminates the personal preferences and biases of the evaluators.
Regular training : training employees to improve their skills and eliminate subjectivity requires significant costs to conduct and does not always lead to the desired results.