Horrible customer service!!!

I have been trying for more than two weeks to get a few issues resolved. Two new units need to be installed and two cars removed grom our fleet. Where I received numerous calls a day from different people within cartrack,I now suddenly get no communication at all. Have contacted our assigned “fleet account manager” a few times via mail and phone-no service at all. I am at a loss for words as we have been Cartrack customers for many years now. If it wasn’t such an effort to move all our vehicles-i would have changed to a different company already.