Disappointing and *********!

Very disappointing!!! My mother has been paying for a Netstar tracker in her vehicle every month for the last 10 years. To the tune of roughly R120 per month. When she called several weeks ago to test if the tracker unit is still working she was told it isn't working and that the warranty on the unit expired in 2013 and after the warranty expires they cannot repair or replace the unit. So basically the unit has not been working since 2013, they never told my mother that and she was paying R120 a month for the last 7 years for nothing. At no point did they let my mother know her unit was out of warranty and so not working. Instead they just kept sending her letters every year increasing the amount she was paying. Paying for a service they would not have been able to deliver as the unit hasn't been working since 2013. That is roughly R8,000 down the drain, wasted, for nothing. When asked why they kept taking her money knowing full well that the unit in her car wasn't working they said the onus is on my mother to check the unit is working every year. Shocking and completely *********.