hobbymodels.com Placed several orders never filled South Caannan PA

I preordered an item.  They never got it in.  I contacted them and they told me I had a store credit.  I did another pre-order.  They did not apply store credit and charged my card again.  I thought OK it was pre-order. 

I sent emails asking them to send me a certain kit and apply my store credit.  No response.  So I directly ordered and again asked to apply store credit.  THey charged my card again.  Then I see item went out of stock.  I have sent several emails asking for ful refund.  No response.  Then told them to send me one kit and we would cll it square....No response