It depends on how much time you give them in your contract. Read the contract. It should have a completion date in it somewhere. If not, then they might just take their sweet old time.
If there was a contract for services in effect, you can sue them for breach of contract.
Sure and the contractor will file if you refuse to pay as long as your local statutory requirements are met and if the contractor thinks it did a good job and didn't breach the contract - but then it sounds as though you have at least two defenses: breach of contract for bad work (assuming the contract called for a level of work that this fell below) and excess billing (assuming the contract was for a specific amount and/or did not allow for additional charges due to unforeseen circumstances and you may have been at least told additional work was required). A lot will depend on the words in the contract.
A breach of contract does not void the entire contract. It can still be enforced.
I hope you have a signed contract with the contractor. Give him fair warning to perform the contract to its specifications or you will take him to court. If he does not - file suit against him for breach of contract.
Not every breach allows a contract to be cancelled. It has to be a material breach.
Discharged mean terminated. A contract can be discharged by -performance -frustration -Agreement between the parties and -breach If there is a breach of terms of the contract, a contract can be discharged.
breach is a form of discharge. Generally, a discharge is when a contract ends for any reason. A breach is when one of the parties does not perform under the contract. Breach could lead to discharge, rescission, or damages, or nothing.
breach of contract
Yes, that is breach of contract. There was a verbal (or written) contract to sell the car to one person by a certain date, if you don't fulfill that promise, you have breached the contract.
if there is no date specify this does not mean there is a breach. for a breach to occur one of the parties to a contract must not have fully performed their obligations. if there is no date specified in the contract the courts will apply a reasonable date
lawsuit for breach of contract
If you opt out and have the right to do so it is considered terminating a contract. If you unilaterally decide to opt out of a contract and do not have a legal basis to do so; that is considered a breach of contract. If you breach a legal contract you can be sued.