GSM-Forum - Motorola VE538(ODM made by BenQ)

Anybody has an idea on how can I access the internal file system of this phone?

I bought this phone a month back and the phone memory kept going down. ie when like I had only 3-4 sms messages, the phone memory showed 50 something and 20 something in SIM.. Same with the free internal memory, it showed only around 2mb free memory while there were no files that I added on the internal memory. (My files were in transflash)

Sent it to the service center and they changed the entire PCB and the same problem is reccuring.

It appears the phone is unable to remove/delete data properly because when I checked my sim after being used in this phone in another phone, the SIM had text messages with random numbers.

Here's the tech data about the phone.

It's a Motorola ODM manufactured by BenQ(and I beleive Siemens, it's very similar to M7 in design)

BREW Version: 3.1.5.105
Language Group: 21
MCT_ini_name: Wellfleet_ATHB1A_ID_Retail_LP0021_IV015.ini
EFS name: id_Generic_LG21.qvcefs
Lockfile: Wellfleet_Moto_Generic_0

Note to admin:
I felt that this forum is where this phone fits. If I have posted it in wrong forum, please move it to the right forum.