Citroen C Elysee 2020 Camshaft Chain Campaign Refused

I own a 2020 model Citroen C-Elysée vehicle and there is a known campaign for the camshaft chain, but despite this, the camshaft chain on my vehicle has not been replaced. I have been experiencing this issue for about 5 months and I believe that the camshaft chain problem is a factory-origin defect. I contacted Citroen Adım Otomotiv authorized service regarding the camshaft chain campaign. However, the service informed me that they would not apply the replacement campaign to my vehicle, even though there is a campaign for this part. I find it unacceptable that a part with a known defect and recalled under a campaign is not covered for my vehicle. I request that the camshaft chain of my 2020 C-Elysée be replaced within the scope of the campaign, or that the necessary repair be carried out free of charge or at a significant discount, and that I be informed in writing about this process. I kindly ask you to review my situation and provide a fair and swift solution.