Hurtful experience

I'm really hurt and disappointed with the technician that came to install the device in my car because he left my car dirty inside worse is that the cover under my steering wheel is completely loose,when I called in I spoke to Nelly (agent) they said they'll sort it but the same technician called me and said he didn't touch the inside of my car insisting he only opened the bonet. I don't wanna lie this hurts me because I recently got the car,even the device installation had no camera as requested as part of the plan he told me they're out of stock.