Do I have to pay bond amount if no training given?

Hi, I joined a company in March 2022. I was asked to sign a ₹3 lakh bond for 2 years’ service, which was not mentioned before joining. I had no choice but to sign. Later, I was sent to the Czech Republic and made to sign another similar bond, but no training was given there. Now after resigning, they are demanding ₹3 lakhs + 18% tax. My 2 months' salary is also on hold. Am I legally required to pay this bond amount?