Terrible customer service and workmanship

We had a claim with our insurers and Best Gutters was the supplier to fix the gutters. This was in Aug 2014. In September 2022 we noticed that there is blue spots surfacing on the gutters. Since we have a warranty of 15-20 years, I immediately got in contact with Best Gutters, they said that they will sent someone out for repairs. No one pitched. Since then we have been phoning non stop, every time they have a different excuse. When we asked to speak to the owner, he is apparently never in the office or in meetings. The lady claiming to be second in charge says she gave the instruction for someone to phone us, but obviously this does not carry any weight. Up until now, no one has phoned back. The client service is pathetic and obviously their workmanship as well. I have reported them to our insurers as well.