I think it depends on the way the whole thing panned out,
Scenario 1; you go into the shop, explain the fact that your stranded 20miles from home and need a repair to get you home, he recommends the parts needed for the fix and sells them to you and only then turns around and says you can’t use any workshop tools, then he’s being a bit of a cock.
Scenario 2; you go into the shop, ask for XYZ, which he sells you and then when you explain the situation he refuses to lend you the tools, then it’s more understandable.
In either situation I would want a refund on the parts that I’d just bought which were effectively useless. The next time your mates want some new bikes/shoes/shorts etc. and need to try some on for size before buying cheaper online I can guess where they’re going!