A DND (Do Not Disturb) activation deactivation complaint letter is written when you have active the DND or stop all calls or SMS from your device but the system is not responding.
You must tell about the problem you faced while activating the system and can also ask for the solution. You can add the steps that you want to take if the problem does not get solved. Here you can find some suitable examples on this particular example.
I am writing this letter to you so that I can register a complaint about the issue regarding DND activation on my mobile number[xxxxxxxxx].
I am receiving many numbers of spam calls and messages from different numbers and various telemarketing services and advertising campaigns in which I am not interested in. So I have decided to activate DND on my number to block these unwanted calls and texts. As suggested by your customer care executives, I have registered for DND activation on [dd/mm/yr].
But till today, the service is not activated, and I am receiving all the spam calls and texts. Even after multiple complaints to customer care, there is no action taken. I wish to express my extreme dissatisfaction as this was not the kind of service promised to me in the contract.
I am waiting to solve these problems with your company. I wrote many emails, and I called many times your call center, but this problem continues. For this reason, I want to solve this problem this week, or I am going to complain about your company to the local authority.
I hope you attend to my complaint urgently and resolve it at the earliest possible.
I have enclosed herewith a photocopy of all my previous complaints about your ready reference.
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