Kingspan water cylinders leaking

Hi, I was wondering if anyone have had issues with water cylinders from Kingspan.

I am on my second cylinder that was installed just in November and it sprung 3 leaks last week.

Kingspan have said that they don't recommend well water to be used. Just running off the mains supply.

The first tank lasted 2 years and my replacement of the same lasted just 2 months.

My water is treated like mains water and even if it wasn't a tank costing €1080 should last more than 2 months.

My plumber has said it is the tank as the 3 leaks are quite obvious.

I'm just curious if anyone else had the same issue.

I am now forced to purchase a tank double the price specified for well water.

Any recommendations appreciated.

Thanks,

David