Samsung service sucks

I handed my Samsung Gear Fit 2 in at customer care in The Grove Mall on 17 January 2018. At first they said that they cannot fix it because it was out of warranty, I then gave them my proof of warranty showing it was guarantied for 2 years. They decided to fix it. I have been following up with them repeatedly. The last 3 weeks they have send me SMS's to say that they are still waiting for the parts and I will be notified as soon as they received updates. Last week I send them an email asking them to consider refunding me because this is unacceptable to me to wait so long. They rep**** back that the device will be repaired by or before the end of last week. I am still waiting!! Just another empty promise from them. I have a couple of Samsung devices but after this I will be very reluctant to buy anything from them again. Reinet