The best thing to do in any situation when dealing with wipers is bonus ball them and make them remember you. When I bunker someone I can put 1 in their pod or 10 in their head, no one can say otherwise.
It makes me sad that people like this play thus sport. I'm no budget baller and I yes I do go buy the nice paint that shoots straight and true, use a ramping gun, and carry tons of pods. But I play back with friends and the noobs and help them to see things that I see from my many years of playing. I play against people like this all the time and the best thing to do is to call it their positions and keep tabs on them, if you play against them and help educate the young ones and the noobs they catch on and grow to like the experienced players and often times the rampers tend not to come back.
I don't know what to say OP other than this happens but try not to let it ruin the experience of the game for you. Try and pick a different field and one that's way more friendly to beginners like yourself.