"Chrome corroded within a year"

Hansgrohe make what appear to be high quality products. One set of taps I purchased has corroded around the handle after one year, on speaking with their customer service team I was dealt with my someone who's main aim was to blame me for the issue. Apparently using a microfiber cloth and Method none toxic cleaning spray is not ok and this has corroded the chrome! They say I should have used lemon juice and a cotton cloth. They suggested I purchased spare parts which cost more than half the cost of the tap to repair the issue.

They claimed this advice was in the box.

I therefore decided to buy a complete set of new taps. To my surprise no cleaning advice was inside the box. Furthermore I referred back to information sent to me with my first order by the company I ordered from but written by Hansgrohe recommend a soft cloth and to use a cleaning product that does not include "hydrochloric acid, formic acid, chlorine bleach or acetic acid". I have checked and Method cleaning spray does not include these items. There was nothing saying cotton cloth or lemon juice.

A friend of mine who is an engineer has looked at the components and think's there was an issue with the chrome finish.

Disappointed that I was dismissed so easily. Awful customer service.