Existing customers get penalised

I have a SONY PlayStation Plus annual subscription that is set to auto-renew on 20 April 2020. At the beginning of March SONY sent out an email indicating that subscription rates would reduce (from R899 to R749), but only from 1 May 2020. Because my subscription renews before the start date of the reduction, I can only renew at the old, higher fee, or I can cancel and re-subscribe and lose all sorts of downloads because I canceled. I have followed with the SONY customer service centre, but every response essentially comes back to "so sorry, but you lose". Clearly SONY doesn't seem to mind that they penalise their existing customers.