bad service at Nissan Benoni

My partner had taken his car to Nissan Benoni for a routine service on Monday 13th July 2020. We got the car back later that same day and received a call from Isaac who was doing a follow-up on the service. We explained to him that we had not run the car and when we do will let him know the outcome of the service. Three days later the alarm goes off and no matter how hard we tried we could not shut it off. My partner called Nissan and spoke to Esmeralda who gave us the most appalling service. She was rude, kept dropping the phone on us, refused to help in any way and when i tried calling as well, Florence on switchboard would not transfer the call to the manager and kept transferring the calls to offices that no one was in. The auto electrician from Nissan insisted we bring the car back as there is no way for them to help with a loan car and was adamant we bring the car through to them and only to get there and be told they had removed the car battery and reset the alarm but had not informed us. I am a disabled person and in a wheelchair and this is how a big company like Nissan treats its clients. Disgusting service, disgusting attitude from staff and yet we pay an arm and a leg for this service. The staff really need to go get some lessons on treating customers better and Nissan needs to take accountability of what they do.