Nokia3 contract phone not working

Hi my name is Rendi. cellphone no ********** 003 .I bought Nokia 3 on contract last year August and it has already given me trouble for the fourth time. I've sent it to repairs at Vodacom repair shop jabulani mall 3times already and after coming from repairs it will work only 4days and started not displaying again and I have to send it back .So I have to spend 2 more weeks without a phone yet am paying every month.Now it has started again for the fourth time and I had to purchase another phone but they are deducting every month for the phone that hardly works. I am really frustrated , disappointed and ****ed with the service I have been given by vodacom.