You need not pay the amount which they ask for, instead write a formal complaint stating that you have not recieved any statement till date from the bank and the people from the bank used to threaten and torture you through some goondas asking you to pay Rs.29000/- against the loan of Rs.8000/-. This is against the law, the high court has recently came out with a law, warned the banks against send the goondas and also charging you with all these excess rates. With these things in the complaint you approach the bank manager and settle your debts. You may settle it for either 8,000 or at the max. 10000. All the best.