persistent telemarketing SMS even in the middle of night even though registered in DND directory and complaints to Telecom company

I am getting persistent SMS alerts from Tel nO: 9841182060, even in the middle of the night on my mobile number 9841041353. We have registered with the DND directory. We have also complained to Aircel helpdesk and they have registered the complaint. They also called back and informed us that action has been taken and the nuisance will stop. It restarted after two days and continues.
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