I recall a certain Suzuki/Kawaski dealer in my area who was notorious for not ordering parts when requested, and then blaming all sorts of outrageous scenarios for why your parts werent there. THe best one i heard was "The container fell of the ship, and your parts were in it." Everything was always "Ön backorder". Eventually started using metro dealers who got the parts to me in no time. Yep the good old days werent that good around here for that.
Yeah - the (long since gone) Honda/Yamaha dealer in Nowra was a classic for that. Basically they were permenantly on stop supply with either brand's distributor - so one month would be fine for Honda and nothing from Yamaha, the next month would be the opposite.
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Workshops can demand a deposit far more effectively than retail outlets.
It drives me nuts when you're asked for a deposit on something that's supposed to be in stock:
"I'm after a [name your part]"
"Nah, sorry mate - usually got them, sold the last one earlier in the week"
"Oh, OK. When will you have them back in?"
"Oh mate, you'd have to come down and leave a deposit if you want us to get one in for ya!".
The other one as some bearings from my local (to work) car parts place - despite me clearly identifying myself and my place of work (my work does a fair bit of business with them, and they give us all trade discount), he insisted on me coming over to pay a deposit on $30 worth of bearings that were in stock in one of their other stores...
OK, whatever - it's a pain, but not the end of the world.
When I get there, it took a fair bit of effort to convince the bloke that I want to pay the full amount, and that leaving a $5 deposit instead, achieved nothing for either of us...