Requested 3GB data for over 3 Weeks, 3 times!!!

On the 2nd June, I logged on the website to cancel my 1.5GB (1GB + 500MB) data load, and activated the 3GB one. Over a week, my data had not been loaded. I called the call center, they said there was a network error, however they will load my 3GB withing 24 Hours. Over a week again, I called, they told me the same thing that my data had an error being processed and they will load it within 24 Hours. Event today, my data has not been loaded and my current usage is almost at 3GB. I will not pay the bill for the month if I'm charged that 3GB Out of bundle.