Bad service on repairs done for clients with warrenty (LOW PRIORITY)

I booked in my Samsung device in on the 2nd December for repairs under warranty at Century City repair center 17 2 weeks later i received a message that my repair had been cancel. When i phoned your call center they told me it was a system error and the device needs to be re-booked for repair. They couldn't trace my device and not tell me how far my device are. Strange enough on my repair slip it shows that the priority is medium and to me that mean they will take their own time to repair my device and that the customer must just wait. Now i dont know if it is because its a warranty repair or are their services this bad always.

I need to know will i have to wait until 2018 to get my device What am i suppose to do with Samsung Do i come and get my device and take further actions Do you always do these kind of things to your customers that dont pay and make those who pay for repairs priority more important then us that are on warranty.

Come on Samsung this aint good!!!! ref: ********** 842