Reliance DESQ - worst store ever I seen in my life.........

Reliance Electronics store is the ever ever worst store in the world. I bought Aqua Sure from this store but on the very 1st day I found the product is damaged, it was already 11.00 PM and I called the store next day and they gave me a reference no and told service engineers will come to my home to look into this issue, but it was 7th day and no one came to my home and I went to the store and I returned the product but they are not not ready to return my amount back and not guaranteeing on any product. I want to launch a compliant on them if any one of you know the details please do let me know.