Dramoly Construction Company agrees with Mr. Tom to construct a swimming pool for him. Tom fixes $2000 as payment for the work to be done and Dramoly Construction Co. did not agree with it but it was told to them that if the work is good enough then they would receive a satisfactory amount. While constructing the pool, it was seen that a more advanced machine was needed to complete the work on time and Tom said that he will pay $500 extra if it can be done within the stipulated time. Dramoly Construction Co. completed the work on time but they were paid only $2000.

Question : Advise the company using case references.