18W adapter Made in India

So I went to an apple authorised service station here in India as my US bought adapter stopped working. But after checking they told me that this is not a genuine adapter because it has made in India written on it and they don’t have any guidelines where it says that this adapter gets produced in India as well as China. So they rejected my case for replacing this charger. I have found many people here in community with the same charger that is made in India.

so Apple please clear this doubt and get me a new adapter.