Subject: Regarding the acknowledgment of (matter) notice letter
This letter is in response to the (matter) notice addressed to me. I hereby acknowledge the receipt (number) of the said notice dated ().
There is a slight issue with the () notice issued against my name. I have filed a complaint following the () regulations since there is no fault from my side, and it is all a genuine misunderstanding. I have also furnished a detailed explanation of the same to the concerned officials in (particular authority).
Also, it is my sincere request to grant me an extension since I require specific documents for the claim process. All the details have got outlined in the complaint explanation submitted to the concerned (official) authority.