Change of Statement Date Communicated on New Date!

I have been banking with Standard Bank for 30+ years. Their service is honestly getting worse and worse. I have had a credit card account with them for the past 15 years. In the 15 years, my credit card statement date has been the 18th of the month. I noticed in February that my credit card statement didn't come through. It has been emailed for the past 5 or 6 years. Went on to my profile details online and it was set to default to be delivered by post. Thought perhaps it was some strange reset with the "new" internet banking interface. Today is 1 March. At 16h54 the following sms is received by me: "Dear customer, during February 2019 we implemented a statement scheduling change on your Standard Bank credit card account. Your next credit card statement will be sent out on the 1st of March. The 1st will be your statement date every month going forward"

Would it have not been far more professional to have notified me and any other affected customers PRIOR to the usual statement dates? It makes me think this decision was taken yesterday, 28 February.

Some of us budget in order to clear any amounts outstanding in order to not incur interest payments on our credit cards (believe it or not!) Now thanks to Standard Banks hideous planning, I will be having to pay interest due to the way they have implemented this change. Most unprofessional. What's my "next"?? (a phrase I loathe). Shopping for another bank that perhaps communicates far better with its clients.