I'm so upset man with Suzuki centurion

Took my car for service. Signed papers before leaving and they called me to tell me that the system shows that I'm renting the car. I asked why would the system show that when this is my car and she said she doesn't know. Then she asked for my ID and address and I figured that's why she felt she should lie instead of telling me she forgot to take my ID and address. Then this morning I'm opening my cubby hole and my things are wet including the service receipt they gave me because they left oil in the cubby hole. How did oil even get there? The oil has no smell and it's clear. My mistake was not checking the car before I left because I was driving back to work but I trusted them as a service centre. Never again. I need to find another service centre even if it's far from where I live.