I am sorry to hear about this matter. You can invoke your rights under the consumer rights act. If a product or service is not correct or fit for purpose then you can ask for a refund within 14 days. If you exceed this time limit the company are obliged to fix the matter by repair or replacement, if they are unable to do this they must provide you with a refund. You must allow them the opportunity to fix this in the first instance. You require to do this within 6 months. If you do it after 6 months but prior to 12 months you still have the same rights however the onus is then on you to show by way of evidence the issue was present at the time of purchase. If you do these and the company does not adhere to their responsibility, you can pay for the issue to be fixed and claim this money back, or a full refund (not both) via legal action in the small claims process.
I shall provide you with a helpful link that will assist you in finding a solicitor/representative near your local area. This will provide you with someone nearby your area who can assist you if required.
I hope this information proved helpful. You will find a local solicitor who deals with these matters on the law society webpage which is as follows;
https://www.lawsoc-ni.org/solicitors (N. Ireland)
Hopefully, I have answered your query in a way that is simple and easy to understand. If anything remains unclear, I will be more than happy to clarify it for you. In the meantime, thank you once again for using our services.
Should you require any further assistance on this matter, please do not hesitate to post a further questions for additional assistance.