Ion Exchange — Damage while service

I had asked ION Exchange to service my Zero-B filer on June 16th. Request no. 51036
The service was done and they had asked for filter replacement, which we agreed to.

The following day, June 17th, we smelt burn in the filter informed the service personal from ION Exchange. The service person inspected the unit and said that, the controller in the filter is burnt and needs replacement. The cost of the controller is Rs.1500.

I called the office and talked to Satish and Kumar. They told me that it won't be because of service and I have to bear the expense. When I told him about consumer forum, he agreed to give me 50% discount.

But, my point, is, that, the burn on the controller happened just after the service and there is 99% possibility that, it was because of some mishandling. Either some-thing was left on the controller or water seaped in or got wet and the controller got shot.

I had purchased this Zero-b RO filer from ION Exchange more than a year back.