My first two jobs both included communicating regularly with customers to answer their inquiries, serve their needs, and successfully set them up with products.
Initially, I registered SIM cards at Elshaddai Communication Concepts and also handled POS transactions.
Afterwards, I worked with a recharge card businessman who put me in charge of selling in bulk. In this job too, I often had to carry out POS transactions. This second job was heavily based on using computers to record sales, money owed by customers, and balances they have left with us. We also used computers to determine our daily profits from POS transactions.