343125 magento XML feed import

I have a Sextoy webstore using Magento, I need to auto-import the products from the supplier via their xml feed. I need ALL fields captured, products enabled and prices marked up by a set percentage so I can globally apply my own discounts to make MY price. I hired some here to do this weeks ago and while they did get a lot of it done it's currently missing some fields and has not markup applied as of yet. I am looking for a xml/magento programmer that has done this before and knows how to get it working 100%, I will have more of this work in the very near future. Remember, alot of the work in done so far on this, it's just been left and the programmer won't respond to messages, I can't wait any longer. I have set the bid low for this project to get it done, the original budget was $75-100 and I already paid this programmer $60, then never heard from him. Would appreciate someone to help me get this finished.