Unusual activity mobiles

[pokerking1]

Can mobile phone companies moniter unusual activity on phones, as my son has had a company phone for 12 years and the average billis round £15.00 per month hes just been told the bill for this month is £7000 and he `s got no idea how this happend, he rarely uses the phone and its the same handset from years ago. Got no further details til later, just wanted to know wether the company should have alerted him or his company that something odd appears to be happening?

[sequenci]

Hello there. They should have noticed that the usage is very different to the norm and should have had procedures in place. has your son spoken to the firm yet?

[pokerking1]

I havent got all the details yet, I was just trying to find out if the company should have alerted them to this usage, as the phones only ever used when hes workin away on siteand hes not been away for a couple of months

[sequenci]

I used to work for one of the big networks and they used to place a bar on the phone if the usage was different to the norm. It can often take a few days for the bar to be added as there is a time lag between the network and billing systems. I'm sure other firms would have similar mechanisms.