John I had the same thing recently in selling an Ioptron IEQ45 mount the was sold 2nd hand in very good condition as good as a 2 year old used ( a lot ) mount can be , all issues ( cosmetically only ) and extras were finialised and the deal was done .
Money received , mount sent .
A week later I got an angry PM from the seller stating " where is the vixen style dovetail that he seen in a photo on IIS that he pulled from 18 months ago ??" ,,, WTF?
I sent an even angrier PM back stateing ,, the vixen dovetail was NOT!! part of the deal , it came with a Losmandy style only ,, so GO AWAY !!! .
Next a big Boo-Hoo thread on IIS about how I ripped him off ??? man some people cant be pleased , can they ? and it sounds like you have one of them , tell him to suck up and handle it ! .
The IIS Mods pulled his thread within 5 hours .
You aint alone here John.
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Brian.