Ali recently own a insurance agency. In order to get more business, Ali plan “a pool party at house”, and would invite local business and community leaders, in an attempt to secure work from them and their businesses. Babi''s job basically involved building pergola, & amp; laying bricks underfoot. As renovation is needed, so Ali enter an contract with Babi, who opearate landscape gardening business. They agreed on a contract price $10000 for the job that to be completed by 10 Octorber and payment make on the date also. Work started according. In 15th September, Babi tell Ali that due to a boom in the business, Babi having difficulting to complete the job on time, however if extra $1000 given, would be inducement enought for Babi to give Ali job preference. Without further negotiation, Ali agreed to Babi''s request. Job completed by 30 September. Due to Ali''s cash flow problem, Ali ask Bob can he accpet $8000 on 1 Octorber as full payment for the job. Babi agreed with unwillingly. Ali paid $8000 on 1 Octorber. Later, Babi wanna claim the extra $1000 from Ali, but Ali refuse to pay. Ali suspicious the job had completed before agreed term of 10 Octorber. Ali feel being tricked by Babi into agreeing to pay the extra $1000 Babi now claiming both $2000 not paid under contract and extra $1000 that Ali later agreed to pay. What is the related legal issue in the dispute between Ali and Babi? What is the most likely remedies will be granted by court?