Samsung J1 - not repaired until now

I had purchased a Samsung J1 last year and ever since then I have had endless problems. If you look on Vodacom's you actually see how many times my phone has been booked in for repairs. The last few times my phone went in Vodacom has never sent me a sms to say my phone is ready for collection. It's a mission trying to get through to them as well as the phones only ring. The last time my phone was given in march they took 3 weeks and haven't sorted anything and didn't sms about my phone which is pathetic service. According to the new consumer act if I you are having problems with the product and is not up to standards, they were supposed to have replaced the headset for a new one. I have endless problems. I cannot keep on running up and down its all costly. The battery keeps on draining out which I'm having to charge the phone twice a day. They have given me a battery but it drains out within no time. The battery that was given to me is not an original Samsung J1 battery. This is very frustrating for me all the time. The apps on the phone just close. The apps don't respond. Certain apps the messages does not come through. This needs to be resolved once and for all asap.