Overview
Coca-Cola is one of the world's most recognized beverage brands, running large-scale consumer promotions across Pakistan. Convex Interactive partnered with the soft drink manufacturer to build a dedicated missed-call campaign system that lets consumers instantly register for a chance to win a car.
Problem
Coca-Cola needed a simple, low-cost way for consumers nationwide to participate in its car giveaway promotion without requiring internet access or app downloads. Manually verifying thousands of bottle-cap codes and registering eligible entries would be slow, error-prone, and impossible to scale to such a large nationwide consumer base.
Solution
We built a missed-call and automated callback system in which consumers dialed a dedicated number, received an instant callback, and entered their 8-digit bottle-cap code, which the system validated in real time before registering their entry in the car giveaway draw.
Process
We designed a dedicated missed-call number that automatically triggered a callback flow for every participating consumer nationwide. During the callback, users were prompted to enter the eight-digit promotional code printed under their bottle cap.
The system instantly validated each submitted code, informing users whether it was valid or invalid and requesting a recheck when needed. Valid codes automatically registered the consumer's entry into the ongoing car giveaway draw.
Result
The missed-call campaign gave Coca-Cola a scalable, accessible way to run a nationwide promotion without requiring internet access or smartphones. Consumers could participate instantly on any basic phone. Code validation occurred in real time, and eligible entries were captured automatically, ensuring a smooth, high-volume giveaway process across the country.
Ready to Power Your Digital Growth?
Whether you're launching a new platform, scaling customer engagement, or optimizing your marketing engine, Convex Interactive provides the technology and expertise to move faster.
