I am writing this email to state that my name is _______ (name) and I am an insurance holder of your company having policy ID ________ (mention ID).
This email is in reference to the request made on date __/__/____ (date) regarding ___________ (claim/refund/any other). It is to inform you that it has been ____ (days) since I made the request and there is no response from your end. ___________ (insurance company), is well known for its best customer service but in my case, your service is not satisfactory.
Kindly, review the issue and resolve the issue as soon as possible. In case you fail to respond to my email, I will have to contact higher authorities regarding this matter.
___________ (Contact details)