Buyers, beware

On Dec 23, I took back a soldering iron that I had purchased on Dec 20. This soldering iron worked as advertised on the first day only, But failed to operate on the second day, I tried numerous times (Different plug points) unsuccessfully, before going to return it the store and exchange it with another one.

The clerk at the store, listened to my reasons of returning and then responded saying "Sorry bhai, this is an electronic item and there is nothing he could do" as I tried to protest, the clerk's supervisor joined the discussion. The supervisor looked at the item and remarked "Well it did work over the first day, did it not?" While trying to keep calm, I told him that I was not aware of the fact that this was a single use item and in that case the package should have been labelled as such. There was no response to my comment.The supervisor then said that he could have taken it if only I had not opened the package.

So, is it my fault that I expect something that I deserve, at least something that I have paid for?