Part of my job is to implement quality control measures to ensure product quality standards are met and to develop a comprehensive quality assurance program.

Implement quality control measures to ensure product quality standards are met.

Part of my job was to provide an excellent customer service by phone calls and emails, helping users with their queries.

Provided excellent customer service by phone calls and emails.

I provided customer service by phone, helping the users to make payments and to change or upgrade their services.

Helped users make payments and change or upgrade their services.