RNK Communications review: Misleading prepaid phone card charges 1

I have been using this prepaid card for almost a year because they are offering a long distance charge for only 1 cent per minute as what it said on their prepaid phone card clearly.
I have been enjoying the 1 cents per minute till I bought few of the cards and suprisingly when I used one of the card as usual the minute drops so fast. I was shocked and called the RNK Communications customer service and they told me that the charges has been increased from 1 cent per minute to 5 cents per minute. This is completely rip-off and scam as on the prepaid phone card still stated 1 cent per minute. I felt the company try to cheat consumer by advertising a lower rate i.e 1 cents per minute on the prepaid phone card wherelse the actual charge is 5 cents per minute.
Hope further legal action can be taken on RNK Communications.