[Resolved]  Flipkart — Demonstration cancelled

Actually we have taken whirlpool washing machine from flipkart.
Its has been delivered on 1st of June. They had given date of 8th June but till time no one had came for installation and now got a message that installation had been cancelled. Without any information how can they cancel and till now we didnt even got a call from demo person. Is this way flipkart will behave with customers need immediate response.