[Resolved]  SBI Cheque — blank chq issued by mistake

My mom 62 yrs old has issued a blank chq sbi to a retailer, towards purchase of a new tv & refrig, the retailer is our dist. relative. On the other hand my dad has taken inr 50000 from another person who gives money for interest. After some misunderstanding, the retailer has given the chq to the one from whom we borrowed inr 50, 000... Now the thug started harrassing us claiming he will sue us under Neg INs. act 138... and will claim 3 lacs each chq (2 chqs issued) .. My poor mom is very upset and fed up with this... Howvever we have filed a case already in the local court... the proceedings are going on... is there any way out ...we are unable to pay fees for the local advocates.. Further, we are not a well to do family to follow this case.. pls advice ... Thanks in anticipation