I am ticked of royally

I ordered 50 margarita snails and my invoice says I'll be getting 25 astreas and 25 ceriths

I emailed Ivan to say I will not be paying for my order unless it includes at least 25 margaritas and the remaining snails to be astreas.
I don't mean to undermine all that Harvey has done to put this order together, but I will cancel my order if I do not get the snails I requested and do an order with J&L instead. Their reef custodians are all 25% off. Anybody else not satisfied with their order with Ivan and want to get their snails from J&L?
The J&L sale is only for the month of January which is fast coming to a close, so the order must be placed ASAP. J&L reef custodian page:
http://www.jlaquatics.com/static/livestock/janitors.htm