Visa Straight Interest Suddenly Hiked up by 3 %

What happened?<br> <br> Did I ever forget to pay? NO!<br> Was I ever late in payments? NO!<br> Have I ever been over my limit? NO!<br> Have you ever had any sort of problems with me as a customer? NO!<br> <br> Why did you punish me with a hiked interest rate of another THREE percent?<br> <br> <br> I want my original interest rate as per the past MANY statements, and this last statement adjusted accordingly.<br> <br> <br> Ref no: RC***<br> <br> I will not allow you to treat me like this.