Selling a defective piece and refusing to take responsibility – Fez/Morocco

I was subjected to a misleading sale by a person in the city of Fez. I bought a refrigerator cooling fan from him, and he assured me it was good and working properly, but he sent me an old and broken fan that does not work. When I contacted him and told him about the problem, he refused to take responsibility and said he had nothing to do, then he cut off contact with me. I decided to return the fan to him by bus to the city of Fez. I told him that the package had arrived at the bus station, but he claimed he did not find it. I contacted the bus official who confirmed to me that the fan is in the luggage storage and he has not come to pick it up for 15 days. And when I contact him now, he gives different excuses, sometimes saying he is out of the city and sometimes that he is traveling, without finding a solution to the problem or returning my property. I share this experience to warn others from dealing without verifying the seller's credibility. I have conversations and evidence that prove the details of this transaction.