It may be appropriate for the parties to resolve the dispute between themselves. This can be an effective approach, and does not involve the time and expense of going to court. As soon as a problem arises, the aggrieved person should contact the other party. If the problem involves goods bought from a trader, then contacting the trader as soon as the problem is discovered is advisable. For consumer complaints, government agencies may also offer advice, assistance or mediation to help resolve disputes - see Assistance from Government Agencies. 

If the complaint cannot be resolved by negotiation, then court action may be considered. Court proceedings could be lodged where a person refuses to carry out their side of the contract and the other party initiates a claim, or where there is some other disagreement and either party decides to initiate a claim. 

Before refusing to carry out the terms of the contract, it is advisable to obtain legal advice.