Idea Cellular — Mydala balance deduction

Address:

Thane, Maharashtra, 401303

I got msg from idea

Dear customer,
Thank you for downloading mydala powered deal from mydala.
You have been charged rs.29
Your balance is rs.172

I called idea customer care.
They told me we don't know about mydala.
We can't do anything.
There is many complaint on mydala.
Idea do nothing.
Idea cheated all people on mydala.
Idea should take action