How To Generate Word Of Mouth.
A trip to the plumbing supplies outlet. Yes, they can identify the fault. Yes, they can order the seals that need to be replaced. No there will be no charge even though it's no longer under guarantee and a number of other plumbers had suggested three figure bills.
Why so helpful?
"Because we only supply products that we can back up."
It wasn't a clever advertisement. It wasn't a scripted customer service pitch. It was just a retail worker enunciating what is clearly a deeply-engrained company philosophy. And that's why it's authentic. And that's why it's memorable. And that's why every customer who experiences it will re-tell it. Just like I am now.