Rude Manager at Superb Uniwell Olivetti

The manager is very rude and their service is very bad. I went there with my two young kids and wanted to purchase a spare key for my cash register. He had the key but refused to sell it to me saying I should come back another time without giving reasons. I tried to plead with him that I needed the help urgently and he ordered me out of the store and swore at me in from of my kids. Don't support this business. Olivetti must disassociate themselves from this business and stop them using the Olivetti name.