Greenwich Plumber

My washing machine stopped working, so I called Greenwich Plumbers for a quote on the repair. The repairman turned up that day, at the agreed time, and I paid £70+VAT for him to take 10 minutes to diagnose what was wrong.
Instead of just replacing the part on the spot, he gave me the details of where to order one online, and said to call back for another appointment once the part had arrived.
He said another £70+VAT callout charge would apply for his return visit — effectively charging me twice for a single repair, when he should have either had the part in the first place, or changed a single fee for both visits and supplying the part.
In fairness, he did show me how to fit the part myself if I didn’t want to call him again, but I think £168 in labour charges for a simple repair is far too expensive.
When adding the price of the part (£20) and two call out charges, I could have spent a little more and bought a new washing machine with a warranty!