Currently it is too over the bandwidth i reserve for you 100GB and now it would reach near 150 GB / 2 days. So pls quick working on this issue and find out what is the main cause. The below information might can help you to investigate that.

The bandwidth usage looks pretty normal, as shown below:

Top 10 Bandwidth Consuming Request Arguments:
Bandwidth: 3G / 04.14% Request: GET /about-cambodia
Bandwidth: 3G / 04.04% Request: GET /flights
Bandwidth: 3G / 03.58% Request: GET /faqs
Bandwidth: 3G / 03.45% Request: GET /hotels
Bandwidth: 3G / 03.44% Request: GET /boats-tickets
Bandwidth: 2G / 03.28% Request: GET /tours
Bandwidth: 2G / 03.14% Request: GET /hotels/
Bandwidth: 2G / 02.86% Request: GET /about-cambodia/cambodia-public-holiday
Bandwidth: 2G / 02.82% Request: GET /other-services?page=services
Bandwidth: 2G / 02.80% Request: GET /where-to-eat-in-cambodia

We did note that the /component/k2/ request to your site is recieving 7.49 times the number of hits to the regular parts of your site:

Top 10 Request Strings:
Count: 723285 / 22.22% Request: POST /component/k2/
Count: 96627 / 02.97% Request: GET /
Count: 45670 / 01.40% Request: GET /tours
Count: 45372 / 01.39% Request: GET /tour-categories?cat_id=2
Count: 45320 / 01.39% Request: GET /oversea?page=studytour
Count: 45280 / 01.39% Request: GET /flights
Count: 45242 / 01.39% Request: GET /tour-categories?cat_id=1
Count: 45222 / 01.39% Request: GET /tours-by-sub-categories?cat_id=33&title=mice
Count: 45002 / 01.38% Request: GET /cambodia?page=studytour
Count: 44888 / 01.38% Request: GET /other-services?page=services

We suggest disabling or restricting your K2 modules, as they appear to be causing this issue for you.