Netstar Poor Service

Worst company to deal with, installed a new tracking device. Background - Vehicle went in for repair 13/1, battery was disconnected and engine removed. Not a word from Netstar. Went on the app requested call back 2 times. No call, Called them, waited for 10 min to answer, was transferred to different apartments only to be told they have high call volumes and phone me back. To date no call, no explanation.