Gilma Hob — Rust marks on hob

HI,
Though I am aware of the complaints against GIlma I bought their products as I used them before in rental apt's.
I Just used it for one day and cleaned with regular water. The next day morning I saw tiny rust marks all over the hob, since that day am behind gilma guys and their customer service is PATHETIC. Especially guy by name THANDAVICH:[protected] is a horrible guy. He bluntly refused to talk on this issue and cut the phone line.

Though GILMA products are fancy, and reasonable NEVER GO for them as their service SUCKS...