behest of the plaintiff, where the plaintiff is carrying on business, where payments had been received, correspondence have been exchanged, contract was accepted, the plaintiff had paid margin monies to the applicant/1st defendant and the Bank Guarantee had been extended from time to time. Subsequently, the first respondent/plaintiff had encountered various unforeseen hindrances executed additional/extra works at Durgapur, entailing extra costs and delays, due to which the applicant/1st defendant had granted extension of time on many occasions to the plaintiff. The first respondent/plaintiff had successfully completed the works awarded by the applicant/1st defendant, for which Preliminary Acceptance Certificate was issued by the Applicant/1st defendant on 30.07.2016, but minuscule portion of the work has to be completed at Durgapur. Thereafter, the first respondent/plaintiff had repaid part advance amount of Rs.3 crores to the applicant/1st defendant and balance amount of Rs.2 crores of advance had been recovered by the applicant/1st defendant during 2020 from the bank guarantees submitted by the first respondent/plaintiff. In 2015, the first respondent/plaintiff has submitted its claims of Rs.2.45 crores for extra works and Rs.75 lakhs for reimbursement of Service Tax. Without releasing the aforementioned claims, the applicant/1st defendant has issued https://hcservices.ecourts.gov.in/hcservices/ the risk purchase notice, dated 22.02.2020 for non-completion of balance