horrible customer service and handling of goods

I bought a tv at the Wonderpark branch at 10:16am today 27 April 2018, it was tested at the store however when i arrived home at mere 10 min later i attempted to switch it on and it did not respond. I immediately took it back to the store and was met with undesirable service ,i was told that i dropped the tv hence it is not switching on. I sat in the store for 2 hours to get assistance and was rudely told that because i had "dropped" the tv they would take it to samsung for assessment. This was after when it was initially tested the tv was just pulled from the tv plug without properly switching it off as you would normally do. Even when it was tested for the second time it was just put on the floor without any cushion or soft padding. They claimed that it had a dot on the screen hence it is not working.If this is the way it was handled in front of me, in what way is it being handled when no one is watching. I paid for the tv in full and expected quality product and service. The level of service at that store is very degrading to me as an adult and customer