Problem after first service

[BikerBoy]

Can't work out why they would even bother checking TBS at the first service if the customer hasn't made a complaint.

Still deciding which way to go with this.

Totaly agree. Especially going to the trouble of hooking everything up and then saying they didn't even adjust anything. Doesn't sound right.
You've caught them out on a lie with that one I think.

I'd give 'em the benefit of the doubt that they'll at least find n fix the issue, if not I'd ask for my money back on the service and go elsewhere.