maybe you have to return it to the same store you got it from, because of the balancing of their accounts, who knows!?
Anyways I always thought , carrefour is carrefoure, but it's not really, one carrefour was selling a computer chair for 130 QAR and on the same day we happen to go by an other carrefoure and it so happen that they sell the very same chair for 110 QAR ,how strange is that?