Bad service

After trying to book my car for a week and nobody answering the phones at Renault Bryanston, i had to drove to the dealership Monday 29 April. Went in and someone was nice enough to assist by booking my car in. I received a call at 2.30 to say ask about my motor plan since they had the incorrect details, gave it to the lady Thuli and never heard back. I was just told that there are no guarantees that my car will be done by close time and there was nothing she can do to arrange transport for me, i asked if she will check and get back to me and never received a call back. I was left at work with no transport and no access to my vehicle! I dont only pay for the car but i pay for a service from Renault for as long as i own the car and i am not getting either or! I am sick and tired of being treated like less than a customer should be treated. i need this matter looked at and resolved ! this is not the first time