Since the UK is no longer a member of the EU your government might charge you to pay VAT or customs when you receive your delivery. We have no control about this. 
If you refuse a shipment, we can refund your order on its return to us, (as soon as we have received it) but please note if you decide to refuse the shipment we are unable to cover the shipping costs and the amount will be deducted from your refund. 
MYPZ cannot be held responsible for any additional costs, customs fees and taxes that apply in your country. This responsibility lies with the customer. If you have any questions, contact your local customs or courier for more information.