These people really don't care about customers. On...

These people really don't care about customers. On 3 occasions, a technician does not come on the day of the appointment, another time, the transporter does not show up on the day he has to take my computer for repair without forgetting the times when the technician comes with a bad part or a broken one on my computer. When I am offered compensation, I do not receive it, I ask for another, it is not possible .... I thought that HP was a serious company but it is not ...