Can Contractor Take Action Against You For Failure To Pay If Invoice Was Not Signed ?

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my contractor keep pushing me to pay off a work done which i intentionally drag because he drag my simple renovation for more than 3 mths

now he claims he wants his accounts to take action against me for failure to pay.

Its not i no money to pay , its i want to teach him a lesson and take revenge against him for dragging my renovation.

i already paid the major parts of the renovation , but the minor parts like adding door grille , add another cupboard was another quotation which was not signed by me ( this is the part which i intentionally want to delay payment)

my question is , if a quotation or invoice was not signed as accepted by me, can he do anything about it ?