Bajaj Finserv — Cancellation of digital cpp telebanding

I have purchased a laptop using emi from Bajaj finance . My monthly emi amount is 4066. Two days before an extra amount of 540 deducted from my account then I checked the details and I came to know that digital cpp telebanding is activated without my permission. How can they deduct and activate any plan without my permission? . Then I contacted them an executive told me to call the toll free number. I tried a lot to solve my problem but there is no option to talk to customer executive.
Cpp I'd:60SDTBL514134