Poor communication

We took our Kia delivery vehicle in for a service on Friday 19.1 at 8h00 in the morning. We were told that the car would take a day to service. We were called at 11am advising a part was needed and it would be ordered. Since that call we have had other call or feedbck, not Friday, not Monday and not Tuesday or this morning Wednesday......that means three days not being able to deliver. The consultant Ymeri who we were dealing with did not call back, the service manager was not available and did not call back, and the branch manager did not bother to call back. All round slack. Needles to say it will be our last Kia we will be buying.