Poor service from Netstar Installations

This week I had arranged for Netstar to install a new tracker, plus remove the old one whilst I was exchanging my vehicle for a new one. Each time, Netstar personnel failed to make an appointment. When I complained they said rhey could only install next week! So, I was forced to cancel my subscription due to their poor service. Now they want us to take my old vehicle to an installation centre where they will issue a quote to remove the old unit! This is the last time that i will use this company as they ate just incapable of meeting their promises