Bibi was indebted to Zayn an amount of P5,000. The only condition was after a month, she must pay Zayn an amount of P5,500. Desperate, Bibi agreed. A month later, Zayn went to Bibi and ask for the money that she had loaned. Bibi said that she can only pay P5,000 but Zayn insisted that Bibi should pay the amount of P5,500, as agreed upon. Between the two of them, who is correct? Explain your answer.

Katie brought her diamond ring for cleaning to a jewelry shop which failed to fulfill its promise to return such ring in February 1,2020. Katie went back to the shop on February 6,2020 but she was informed that the ring was stolen by a thief the night before. Katie filed an action for damages against the jewelry shop which put up the defense of force majeure. Will the action prosper or not? Explain.