SAFARICOM CAN NOT EXPLAIN HOW MY MONEY DISAPEARED FROM MY MPESA AND WITHDRAWN TO ANOTHER PERSON.

I had 6834/= in my mpesa account by 4th September,2010  the  followind day  which was on Sunday  5th  i found  i had  69/=  balance. No mpesa message telling me money has been transfered and to make it worse i had my phone throughout secondly,when i went to complain in their branch in sarit they did not give me their attention,just telling me to pay 500/= for mpesa statement and report
to police,going to police they cant understand how this can happen.And that money is lost that way.SAF people can see details of the guy who withdrew my money in their machine and they cant follow it up,so we be aware,of mpesa banking.