There is nothing to argue - the contract was fulfilled. I've been through the mill on this one and more than once. Under the terms of a normal purchase agreement, it is up to the buyer to tell the vendor where to send the goods. That can be anywhere, but this time Mrs. Goat-Posture stipulated Flat 27 on Oil Drum Lane.
The vendor's agent (delivery person) must take reasonable steps to fulfill the contract. Flat 27, House 27. It is reasonable to assume that the two refer to the same address, as no other house number was provided.
The reverse is also true - if the vendor does not take reasonable steps to complete, they remain responsible for completion. Ages ago, BT was supposed to install stuff at our place, which I gave as number 16. They refused to complete as there was no subscriber at number 16 according to their IT system. Only when I threatened legal action did they bother to check and discovered that they had us down as 16-22 (it's a 20-acre site).
Things get hairy when people give their houses stupid names - and get even hairier when the name gets changed and some berk refuses to use the house number. The delivery address is an important part of the contract and it must be completed in full and clearly visible on both the order and on the property.
It is reasonable to assume that 16 is included in the address 16-22. However, it would not have been reasonable to assume that 6 refers to property number 16.
You get idiots adding lines to their address to make them appear grander. Bogus House, Bogus Gardens, Slag-Heap Road, Ashby, Scunthorpe. Somewhere on Slag-Heap Road, there is house number 129 and round at the side, it states 'Bogus House' on a small sign. Expecting delivery would then be unreasonable.
This is really basic stuff - contract law 101.