Hi Sarmad,
The following link should assist you in classifying job categories as per NOC.
ww.workingincanada.gc.ca/report-eng.do?action=search_occupation_confirm&noc=1453
It comes under Semi-skilled category C under NOC Code 1453.
OCCUPATION SELECTION
Customer Service, Information and Related Clerks (NOC 1453-C)
This unit group includes clerks who answer enquiries and provide information regarding an establishment's goods, services and policies and who provide customer services such as receiving payments and processing requests for services. They are employed by retail establishments, call centres, insurance, telephone and utility companies and other establishments throughout the private and public sectors.
This group also includes the following titles: accounts information clerk, bus information clerk, call centre agent – customer service, complaints clerk – customer service, counter enquiries clerk, courtesy desk clerk, customer service clerk, customer service representative – call centre, enquiries clerk, hospital information clerk, information clerk – customer service, lost-and-found clerk, order desk agent, public relations clerk, tourist information clerk.