Extremely unhappy customer

I have been a multichoice subscriber for 30 years. Two years ago my husband passed away.I renewed my premium subscription for two years with the price lock option. The contract is expiring at the end of Match 2025. Here's the catch Apparently one can't renew it until the last day of March or first of April. In the mean time my account is showing that I owe the full premium for March 2025. I have been billed R200 more for March than I have been paying for the past two years with the price lock. I am an Extremely unhappy customer. Shocking service