Very poor customer service

Very poor service. I purchase a relay from the Plumstead branch and specifically asked the salesperson if I could return it if I did not use it. He said that could. I purchased the relay and did not use it. About 10 days after purchase I went to the store to return the relay. I got a rude surprise when the salesperson told me that I had taken to long tor return it and showed me a sign stating that. At no time during the purchase was my attention brought to that sign. I called the head office who were not very helpful either.