How can I recover my website after QuickBooks migration issues?

[ggubbins]

I am a retailer who had built and used the shopify platform for a number of years for my website design and ecommerce sales. For instore sales I used Quickbooks Point of Sale. I used an app called Webgility which connected my quickbooks to my online store to keep track of inventory between the two platforms. Recently I purchased Shopify POS and a shopify specialist assisted with a migration of my quickbooks inventory to the shopify platform. HOWEVER, after the migration all my product images and product from my shopify website were erased. I'm left with my inventory list from quickbooks but my entire website which I spent years working on was erased. HOW CAN I GET MY WEBSITE BACK!?!?! BEYOND DISSAPOINTED WITH THE SHOPIFY TEAM ON HOW THEY COULD MAKE MADE SUCH AN ERROR. And nobody from their sales team will assist me.