Fraud person dealing in demonetised and fake currency notes. He greets well and then assures of pretty decent after sale services in case any issue faced but let me assure you, every 1 in 10 notes is either fake or demonetised note. You will not be knowing which is fake or what. However, what I went through abroad was so worse. They at foreign location will even take you to a police station if they see you using any fake currency. Now your deal people, if you want him to flourish at the cost of your inconveniece. When I reached there to have my notes exchanged, he called the cops just to pressurize back, which didn`t work in my case but However, that`s how it has been the experience. Please BEWARE!