Marriage cancellation

I got engaged to the bride two months ago. I'm a very high introvert and wasn't in touch with her much. I never called her after the engagement, but when she called me, I spoke to her nicely in a soft manner. Whenever she messaged me on WhatsApp, I replied with a delay of 1 or 2 hours. I told her that I actually didn't want to get married for another 2 years, but my parents wouldn't listen and convinced me to get married (it's not about her, it's about marriage). I also mentioned to her that my parents convinced me by saying that the bride's family is good and they are very nice people, so I agreed to the marriage with her. I shared all these words with her only because she asked me to consider her as a friend, and that I didn't need to hide anything from her. Now, she and her family are threatening my family, saying that your son is not talking much with me, he never called us after the engagement, and he used to reply to my messages very late. They also mentioned that your son said he didn't want to marry for another 2 years and is marrying me only because you (my parents) convinced him. We don't want to marry your son. If he is not interested in me, we will file a complaint at the police station against your family, or give us 40 lakhs as compensation (that's the amount they said they will give us as dowry) . The thing is, I never said that I didn't like her or that I'm not interested in her. I just mentioned that my parents didn't want to wait for 2 years and convinced me to get married because her family was good.