Bank changes interest rate up by 2% *******ly

I received an email letter indicating that the bank is unilaterally increasing my home loan from a long term negotiated rate of 8.25% to 10.25% which amounts to ****************. Apart from Banking ********* behaviour and non compliance to Consumer Protection Act, there is also an element of bullying and autocratic actions by the bank which is totally unacceptable. I request an executive to come down to my level and rectify the situation asap. Standard bank has for years been robbing me in the quite with ******** deductions, ******* payments. I always have to catch the bank doing wrong and submit the proof before the refunds are made. I worry about the millions of people that don't see the crime of the bank of ******* deductions. The bank is making Billions from these ********** activities and only a fraction of customers who complains gets back the money. Lets stop the ROT ASAP . I want answers urgently pelase.