There are critically two significant consequences of failing to repay your debt.
The first one is that your credit score will take a beat. All credit-related information of the owner and credit card user is sent to CIBIL and other credit rating agencies. They would know your credit history from head to toe. We all know that every loan nowadays is been approved based on the credit history of the borrower. While if you are defaulting your payments, your credit score will take a hit. And this will make it difficult for you in the future if you would want to apply for a loan again.
Second, the lender can auction the property which was used as collateral for the loan after following the due legal process.
The bank will send first notice to the borrower mentioning the due amount with interest. If the bank realizes that the customer is willingly delaying the repayment, then it could lead to legal proceedings. The follow up from the bank will start soon as a single repayment is missed. The legal procedures will not emerge when the customer is willing to repay the amount after a break. (Sometimes there are situations like death, illness, or accidents that can cause a break in the repayment of the loan amount. So, in this case, banks will give holidays to the customer or his family. Also, as per the guidelines of the Reserve Bank of India, banks should provide time to the customers to pay the loan amount. And should not use their muscle power to recover the loan amount.)