Insulted by increased bill after 24 months loyalty

I have entered into 24 month contract for my 2 kids at R89 per month for 2GB data for 24 months - sim only.<br> Now that the 24 months is over - Cell -c upped my account to R249 per month for 2GB.<br> <br> In the market. Cell-C and MTN the average going rate for 2GB is R89 and I don't know why you would want to upset a customer by increasing the monthly billing while you still offer the same contracts. You could surely extend the contract for same value or do you want me to give notice and move to another service provider.<br> <br> IF that is how Cell-c treats loyal customers and expect them to give notice after making their bill 3 x more I will gladly cancel the contracts. I see this as *****ing!!