Exceptionally poor service delivery

The screen of my iPhone 6 shattered when it fell on the floor. I turned it in at the store, where they told me it would be ready within two weeks time. Within one week I received an sms stating that my phone was being sent back because I declined the fee that was required for repairs. I never received any notification regarding such claim. I phoned the shop and informed them, whereupon they said I should go back to the store to provide proof of identity before they can continue with the process. One week later I get notified that my phone is ready for pickup, only to find that the screen was replaced but that the screen was not properly sealed into the framework of the phone. In addition, my insurance at Vodacom was not registered for the order despite me filling out the forms for it on the first visit. I requested that they send my phone back and complete my insurance. One week after this, I again receive a notification that my phone is ready, only to find that the screen was still not sealed and that I had to pay a fee of R900, as my insurance only covers R1100 of it, insurance which I pay almost R300 a month for at Vodacom themselves. This is unacceptable.