CYBER HARASSMENT, BLACKMAIL,HARASSMENT

i broke up with a girl whom i met on a dating website. intially she seemed good and we got emotionally connected on phone and had some romantic chats. i expressed my willing to marry her if all goes well but later i have found out that she is not the right girl for me as i started noticing her peculiar behaviour. i was also in good terms with her mom only on phone. her mom and the girl are harassing me that they would file a cheating case against me and asked me pay the money for the foodies she ordered on swiggy total amouting to 5000rs and i paid them. Her mom is harassing me that her daughter is under depression because of me and i need to pay her medical bills. can a case be filed against me and if so what legal remedies are available for me? note : 1.o physical contact ,havent even met her or seen her or her mom.. 2. i did not ask her to order those foodies for me she did it out of her own interest 3. The relation was just 40 days old.