Qatar Airways used to care about their customers

I had booked a ticket to fly to South Africa with Qatar Airways. Knowing that I might have to change the dates of the flight I read very carefully through the conditions for changing. Prior to paying the only statement that was made was that a change would result in a fee of SAR95. After realizing that I had to change the ticket, I went online and tried to change the tickets only to find that that there was more than the initially mentioned 95SAR. I have been very happy with Qatar Airways and have had any issue resolved very satisfactorily until now. However after speaking to their customer care and the representative confirming that there was no further information available to the customer at the time of booking, I had lodged a complaint to raise the issue. It has been a few days with no response from Qatar Airways. I feel that Qatar Airways has misinformed me and feel saddened by the fact that I may have to change to another airline due to poor service. I am not sure when Qatar will get back to me but as of now I am very disappointed. If this issue is not resolved quickly, I will definitely never fly Qatar Airways again.