I was loyal to Sigma Sports in Hampton Wick UK for years until 2020/2021 when they proved to be next to useless. We had the pandemic so I gave them the benefit of the doubt the first half dozen attempts to book a service for the bike they sold me about 2 years ago. I made at least a dozen attempts by attending the shop twice, going on their web site, emailing them several times and leaving voicemails over a 6 week period. I gave up today and called Giant in Twickenham for a Gold service of my Focus bike as they do all makes. I was delighted that my call was answered on a Sunday at the first attempt and that they could fit me in within a fortnight.That's it Sigma. You had me in your pocket but when no one could be bothered to deal with a long- standing customer, then I'm off to find someone who will show they care. J- Teddington