We use a third party company (Telegistics) who are registered to repair our devices. They typically aim to have all repairs completed within 10-14 days but it really depends on the issue with the phone and the type of handset.
Some faults may take longer to fix, especially if parts need to be ordered.
You can track your repair request online here or contact Telegistics on 0800 835344. Please have your order number handy.