Wiper arm help please - urgent

[Trispage]

Guys, i need to get hold of at least a passenger side wiper arm or both front ones.  All the splines have been eaten out of mine.  I travel to and from plymouth to portsmouth each weekend so need it fixing for my journey tomorrow.  Tried ECP and they are out of stock and my local scrappies have none.  Any advice greatly appreciated.  Oh VW parts shut at 1 o clock

[houston]

ebay, try asking if seller will send one out urgent