I contacted Hatton's about Vat being charged twice etc & here is the reply I received.
"We're unaware of this sort of issue with orders to Ireland/Southern Ireland being charged for VAT twice but whilst places are still adjusting to the new systems that have been put into place, so sometimes issues may occur and orders can slip through the cracks.
If you place an order with us and this does happen, if you get back in touch with us we will sort this out for you straight away.
I hope this puts you at ease a little and if you have any questions please do not hesitate to get back in touch with us."
Tony.