I've managed to snap the magnetic drain plug (7)

Number 4 on the pic below:

Looks like I've been sold a fecked torque wrench...
I have a crazy vision to try and attempt doing this myself... centre punch - small drill - bigger drill - easy out... just doubt my mechanics skills at the moment...
Maybe it would be better to push it to the local garage (100m) and have it done...
A new plug will cost me 15 quid delivered, just wondering if I could "demand" some sort of refund from the place I got I got the bloody thing...
Already found a new drain plug in ultimate parts, just wondering if anyone knows a quicker place to get one (don't fancy taking the bus for long).