This is deposit that can be refunded when service is terminate.

If this foreinger paid no deposit, or paid only the rm75 deposit and called up a few hundred or thousand and then cabut and return back to thier country, TM cannot find them nor collect the money, then TM has to take a loss. Which means Malaysian people get less benefit of dicsount or promotion etc etc.

Also, remember that TM paid interest for the deposit of 5% and credited into Feb phone bill.