In November of 2018 we called that company and we explained them that we are a delivery service company and that we are looking into how to track our trucks. We were told that with their ELD devices and their services we will be able to track our trucks, usage of the trucks, manage drivers and so on ...BUT after we purchased almost 20 devices, paid for the installation and did the whole setup on the computer and spend all together in the amount of over $7000.00, tracking of the trucks was not working and it is not even posible with this device to track your vehicles. We called and complained and they have the nerve to try to sell us yet another device to accomplish what their device could not do, a GPS location for which we would have to establish the service agreement with yet another company. ABSURD! We called and complained and try to cancel the deal and they just played dumb and keep charging us for monthly services which we never even used. Even after numerous calls to cancel the services they were still charging us. Now finally after more than 6 months of complaining we got the cancelation email and credit for only one month of services. We are now stuck with the loss of $7K and useless devices from JJ Keller. STAY AWAY! We will seek court help