guy just phoned me about warranty

[DundeeUnited]

hi there when i was leaving to go to college today a guy phoned me, i couldnt hear where he said he was from but he said something a bout a citroen saxo, and he said that the warranty had ran out, i couldnt really take the call and he said he would phone back, iv only just bought the car on sunday, what does this mean if the warrantys ran out, and who was it that would most likely phone about that??????????