System error now my problem.

In 2005 I took out a cancer policy with Channel Life. When I enquired on Monday about the procedure when the policy reaches maturity at the end of 2015 I was informed that there was a system error. This means that the premium of R135.00 was lowered to R87.66. They now expect me to pay the amount which I am supposedly in arrears to the amount of R513.54. They even suggested that I could pay it in two double debits of R297.00 or they could write off that amount and make a single debit of R148.50. The following sentence describes their total disregard for the people they \care"for with their policies'<br> \""Please note that if we were to write off the arrears on your policy"