What are the options for the amount left over? Can it be used as store credit or refund?

There are three options that we can offer you for the rest of your amount. We can refund you in the same way you paid, can issue a voucher for the rest which you can use on our website for your future order or we can save your credit for your future order, please let us know which way you would like to go and we will take it from there.