Many thanks for your patience, I am pleased to be able to continue assisting with your query now. First of all, I am sorry to hear about the issues you have experienced in your situation.
When a consumer enters into a contract for services, the Consumer Rights Act 2015 says that such services must be:
- Carried out with reasonable care and skill (to the same standard as any reasonably competent person in that trade or profession)
- Finished within a reasonable time (unless a specific time frame has been agreed)
In addition, any information exchanged in communications between the parties, whether written or verbal, is binding if the consumer relies on it to proceed with the services in question. If there are problems and the trader cannot satisfy the above criteria, which are legally expected of them, the consumer will have certain rights
In the event of substandard work, the trader should either redo the parts of the work which are inadequate or perform the whole service again at no extra cost to the customer. This must be done within a reasonable time and without causing significant inconvenience. If this is not possible, the consumer can claim a price reduction, based on the severity of the issues. That is something which should be negotiated between the two parties. However, if the trader refuses to resolve the issues, the consumer can consider getting someone else to do this and either deduct these costs from the balance that is still owed to the original trader, or pursue them for any extra costs that have been incurred as a result.
In the case of delays, for example if the work has substantially gone over the agreed schedule or not been performed within a reasonable time, the consumer can ask for a price reduction to cover any financial losses or inconvenience caused as a result. If the work is incomplete and the trader refuses to work to the agreed schedule, or complete it, it is possible to get someone else to finish the work and charge the original trader for these additional costs.
Therefore, if the above apply and you have incurred additional costs, such that you can cover the with any outstanding money still to be paid to the trader, you can withhold that as a result.
He may not be happy with it, as you can imagine, but the matter is now in his hands and he has to decide whether to take it further or not to challenge you.