Samsung pressure switch

Horrible experience I had with the head office.Waited for their feedback after asking about a water pressure sensor if they have in stores...spoke to the lady handling the whatsapp chat since at 11 am she told me she will respond with the price and which branch should I go to buy the pressure switch till now no response..I called again the lady said she will Transfer me to the lady I spoke to on whatsapp and she never picked up the phone