Hyundai Verna Transform [2010-2011]

My vehicle Verna 1.6 VTVT TRANSFORM 2010. Reg no. MH-XXXXXX. I have a Verna Transform September 2010 model first hand. Sparingly used it- only 23k km. It is always parked in a closed garage. I recently noticed a problem of jerking at low speed intermittently and so on 4th September it was serviced at Shreem Hyundai, Ray Road, Mumbai. They could not find any fault during this paid service. When the problem persisted, on request they sent a mechanic  Mr. Ali who reported that this is strolling (jerking) and called for the vehicle at the service center(11 sept.) Where they found carbon accumulation which was cleaned. But the problem persisted and so they again called for the vehicle at the centre on 16th September. Now I have been informed that all the 4 coils are defective and needs replacement which costs Rs 24,000. Its surprising that ALL the 4 coils are defective. While going through the facebook page of Hyundai(link below) I came to know that this is due to design flaw and there are many complaints for the same problem. I request Hyundai to replace all 4 coils free of cost as this is due to design fault. I expect a prompt reply.Performance.ignition coil problem due to design flaw, bad fuel economy. suspension not good. expensive spares.