Failing to fix online banking issue

Every time I stop one of my debit orders it is impossible to cancel the instruction unless I call in and have someone do it for me. A few months ago I had this problem, I called in and one of your consultants were able to cancel the instructions. I called in 3 days go to have this problem resolved, the 1st consultant told me it was not possible, the 2nd consultant asked me for a screen shot of the error which I sent and still have had no response, when I called in the 3rd time I insisted to speak to a manager since no one could help me. The manager then asked me for a screen shot and I again have not heard anything. This is a incredible inconvenience. How many times do I have to run into the same problem before it is resolved. The last time this happened the consultant did it for me over the phone but all of a sudden it seems the call center has no idea what is going on. This is a problem that I should not be having and it should have been resolved a long time ago. I would like to have internet banking that works. This is ridiculous and incredibly frustrating.