Customer service experience: Troubleshooting and replacement of a defective redox probe.

Customer:
Hello, I bought a redox probe from you last year but I can't find the delivery note anymore. No matter what I do, the probe is not providing stable readings. Why?

Technical Advisor:
Hello

Customer:
Can I call you somehow?

Technical Advisor:
Can you perform this test and let me know the results? https://ph-redox-pool.com/gb/content/17-is-my-redox-probe-out-of-order

Technical Advisor:
Can you tell me your name?

Customer:
Freddy Klement
Am Eggärtle 2
86381 Krumbach

Customer:
I'll do the test, wait a moment!

Technical Advisor:
Thank you

Customer:

Customer:
Just water

Technical Advisor:
And with salt?

Customer:

Technical Advisor:
The probe is defective, we will send you a new one tomorrow

Customer:
Thank you, that's very kind. How much will it cost me?

Technical Advisor: