[Name of Operator]
City, state, zip code
Subject: Complaint letter for excess mobile bill
I have been availing of the services of your telephone exchange for the last three years. There has never been any problem regarding the bill received for the services provided by you. And I am pleased to welcome your services without any issues. But, with regret, I bring to your kind notice that the bill for this month has been way too much compared to the previous few months’ bills. I would also like to categorically state that no excess/unusual calls have been made from my telephone. I would, at this moment, formally request you to look into the matter for any unintentional errors/mix up in the concerned bill and rectify the same at the earliest.
I would be very much happy to oblige any other formalities as per requirement. I have also attached a list of relevant documents necessary for the matter concerned. Please investigate this matter and correct the billing error as soon as possible. In case any other clarification is required, I can be contacted at a mobile number or by email [email address].
Here are my details:
I do sincerely hope that you will appreciate our position and do the needful at the earliest possible date.
1. Address Proof
2. Telephone bill receipts