I need help

Hello I have a complain last year I bought a cell phone at pep and then it was have a problem and then by the 9 of November I returned it back to the shop end then they said I must come back by 9 of December I went there and then they said the cell phone it takes 6 weeks after that week's I went back there they told me that the phone it still get fixed so I need your help Name of the shop is pep at palmridge