a gun is in such case for a single person no solution, they would love about it and they together have anyways many more guns to fight a single one.
we had the same probs of course also over here on the east, demolished cars, broken bones and we had gunfights.
there are only 2 ways to go on:
one would be to make your deal with that syndicate(i hate that one because it is not the right way, but it is the harmless one).
the other way is to be together with people who have power in your surrounding area to show them that it would be painful for themselves to fight that lil spot.
anyways the mean point is that you are legally entiteled to do the transfers from the airport to your guesthouse/hotel. if you are not, or if your car is not registered as a transfer vehicle within tourism aso they would even have the law on their side.
not that they care much about the 'law',
if you wanna fight with the cabby syndicates you should be very aware that you fight with power, no kiddies club, no space for much words. such may make it neccessary to get some strong backup to watch your back.
be sure on your papers first,
if they are right contact ole pals in your area who do those transfers for themselves and stick together to show up like one unit.
if that's not your thing i would agree with prior posts which recommend to make your deal with them.
good luck
Mike