Jio — unsolicited sms

Address:

Mumbai City, Maharashtra, 400091

I have full dnd on jio network but i still get promotional sms'. After writing in to customer care about it. I get the following msg: the concerned operator has reverted that no action has been taken since reported sms relates to your opted preference category of commercial communication.
Which means that i am going to continue getting these sms'
I got the above reply from jio on sunday 5th may 2019 after having a service request no. Sr# sr00000wr9mj at 10:40 am.
This is a subtle form of harassment. Please intervene