KIA's Unresponsive Customer Care for Ongoing Defect

I am writing to report a recurring technical issue with my KIA vehicle and a complete lack of response from KIA Customer Care. During a routine service at an authorised KIA dealership a few weeks ago, several failing bulbs were replaced. This was not the first time these bulbs have needed replacement, indicating an ongoing, recurring problem rather than a simple part failure. The replacement during service was a temporary measure. The core issue, why these bulbs fail prematurely, remains unaddressed and unresolved. On 29 December 2023, I emailed KIA's official customer care to report this persistent problem and to seek a definitive, lasting resolution. To date, I have received no acknowledgment of this email, and certainly no substantive response. This silence is unacceptable. A proper resolution requires diagnosing the root cause, not just repeatedly replacing the same bulbs. To date KIA's customer service has failed to engage on this issue at all. I expect KIA to: 1. Acknowledge my communication from 29 December. 2. Investigate and provide a permanent fix for this recurring bulb failure, not just another temporary replacement.