Network issues

I have a big issues with my new phone, A6+ bought from Vodacom contract. I work in Dunnottar and Nigel and everyday at work I do not have network, I took the phone to VodaWorld in Midrand spent the whole week without a phone and it's been 2 weeks and the issue it's worse. And after receiving my phone back I had to download all my apps back using my own data. I have to forward my calls to my husband simply because I always miss all my calls. My phone is either showing no network registered or emergency calls only. This is really frustrating as the phone is only 3 months old and I still have 21 months to go with this contract. The one I was using before upgrading was working perfectly fine , now network is dololo.