Mydala — Mydala deducted money from my Vodafone mobile account balance without consent

I got sms from VM-MDLITE stating that rs.48 has been deducted from my Vodafone mobile account balance. When I called Vodafone customer care, they told me that I must have clicked on mydala pop-up, but I never clicked on any such pop-up. Vodafone customer care was not ready to help at all.
My money was deducted by mMydala without my consent. I didn't even clicked on anything. I never requested for Mydala service.
I need refund of my money and blacklist such frauds.
My mobile number is [protected].
Arvind Singh