OneAssist Consumer Solutions — service activated without my consent

I was given a one assist plan along with loan without my consent for a three year package amounting to 3999. Relationship number: 3763885. I have called a hundred times to cancel and all they say is that i will receive a callback for cancellation and when i do, the agent disconnects when i pick up the call and if i try to give a call back, they never answer. Truecaller made me know that you guys were calling. I called them again and they are not ready to cancel over the call and give the same response. I am very much frustrated by their attempt to charge my money without consent. I need it cancelled and refund the whole amount, no matter what.