Customer service is just a name at Jeep SA

I took my Jeep cherokee for a yearly service recently at East Rand Jeep, asked them to update the maps on the Sat Nav. I was told that they do not do that and I should go on line and do it myself?? So i contacted Jeep SA to please advise me what to do as i do not feel comfortable in trying to do it myself. I have now spoken with at least four people there who have assured me that it is not Jeep policy for me to have to upgrade my own maps and they would look into the matter and advise me soonest. Yeah well this was two weeks ago and not a peep from anybody. As it happens I'm considering upgrading my car and guess which Marque I'm not looking at. Jeep obviously doesn't need my custom so good luck! Bruno Lolli