Accusing clients of lying and bad work ethic!

I cancelled my insurance and I had to de-install my tracker device. I had it done through a technician with Discovery insure (they send a person) and after de-installation, none of my electronics in my car worked. Thando was just standing there telling me that the car was fine before the de-installation and that he doesn't know what to do. I called the company and complained. After I spoke to various people, I spoke to a lady saying that they spoke to the person responsible and according to him, my car was in that exact condition and that I was fully aware of this. I was told I had to take a lie detector test (on my own expenses) and they will let him do a lie detector test and then after that they will do a further investigation. The lady actually told us that her manager informed her about the lie detector test. When we spoke to the manager he assured us that he never said anything like that because that is not the policy and he thinks that the lines were crossed. Although the lady we spoke to was in fact working there. It is no coincidence. Very disappointed in their work ethic and service. I am glad I cancelled with them.