Kymco Start Problem(s)

Hello guys,beautiful evening I had bought a Kymco Poeple S300i (Mod.2011/15000 Km),so,on the way home he still worked,when I wanted to drive to work the other morning the engine began to stutter at once and finally remained constant attempts to start it again were in vain,no sound he gave more of himself,I type on circuit break or similar, because he was full fuel and a new battery apparently. Since he should have a year warranty I will have yes now the repair didn’t have to pay already, what would be even more beautiful! To this the seller said “in us everything had worked correctly” as if “I” had broken something, you have to imagine…? What do you think about it, or what would you do? Would I look forward to comments, greeting,John