Andy was a telecommunication contractor. DG was a telecommunication operator. One day, one of DG’s transmission station

[answerhappygod]

Andy was a telecommunication contractor. DG was a
telecommunication operator. One day, one of DG’s transmission
station had suddenly lost its transmission signal and hence the
whole DG network was down during midnight. Hence, due to urgency,
DG asked Andy to rectify the transmission station within the next 6
hours without negotiation of terms. With considerable effort, Andy
managed to bring up the network within 5 hours during odd
hours. However, when Andy requested payment from DG for the work
that he had done, DG refused to pay Andy, claiming that what Andy
provided was a past consideration. Apply an appropriate legal
principle and discuss whether Andy has any claim from DG.