Customer service from Tunze

[KTV]

Anyone with good experience with Tunze customer service?

My nano osmolator decided to go crazy and continuously dump water into my tank the other two weeks ago, woke up to the sound of water dripping and luckily we caught it just as it was spilling over the tank and minimized the damage. It's a pretty simple unit so narrowed it down to either the float switch or the control unit. Bought it less than 8 months ago and Concepts advised that I'll have to go through warranty but trying to get a hold of Tunze is impossible, tried their contact form on their website and emailed them directly over a week now and no response.

Just ended up getting a JBJ unit from another member but wondering if anyone has similar experience with the osmolator or Tunze warranty claims?