the guys at zimson mantri mall are big thugs.
they insist on cash - god save you if you dont have cash, that too after the purchase. there is no signboard about 'pay by cash'.
the receipt they gave me is a handmade - there is no TIN on the bill!!
and worst of all - they tried to cheat me by replacing an old battery. I asked for battery replacement for my swiss watch. the guy showed me an original battery, but when i closely watched him on the close circuit tv (right behind the cash counter), i could see him swapping it with an old battery!
beware of this store, and Ali. i have not transacted on other zimson stores so cannot comment.