A few years back there was a few 7-Elevens around in KL and some typical Chinese "convenience stores" but not much else. For some bizarre and completely incomprehensible reason, 4 or 5 years ago, new ones started popping up everywhere. I would guess I currently have at least 15 of them within 5 minutes walking distance.
They all have one thing in common: they are all inconvenient. A common trait seems to be that they are staffed with complete morons and the managers are appointed from the least moronic of these. The staff is without exception rude, slow, lazy and the shop managers wouldn't dream of ordering new stock before they have run out of the old one - with the result they are constantly out of the most popular items (but got plenty of whatever crap nobody want to buy).
However annoying these shops are in general, a few month ago a new one opened about 50 meters from where I stay and this one appears to have taken the "inconvenient" part to a whole new level.
Another thing I noticed in this shop was that they always gave wrong returns, but up until yesterday I never really thought about it. Out of general habit I always make an estimate in my head and if the amount requested is more than a few Ringgit of my estimate I know something is wrong.
Yesterday is the first time I figured out the staff's approach. Notice the following receipt:
Immediately following the above example I was talking to a French couple who just left the shop - and they had been cheated in exactly the same way several times. I have also seen people be short changed - and as mentioned - I have experienced it myself a number of times (only - yesterday is the first time I kept the false receipt).
I will send a link to this blog entry to KK and see if they get back to me. If they do I will add their comments here - if they don't (which is more likely) I will mention that too.
Update July 10, 2012:
I did send them an inquiry through the web-site. Apparently it just generates an email of which I received a copy and the other copy went to: email@example.com. Needless to say that now, after 1 week, I have not heard anything back and by now it's probably too late to check the security cameras anyway.