Promised 19.99 competative rate by bell charged 35.99 overbilled repeatedly

Has anyone had this happen with Bell Canada a lot of false hopes and promises if you stay with them?
I can not handle this over billing - ready to complain all the way to crtc etc. This is fraud when they take auto payments from your account and take more then the agreed amount.
They do not know what they are doing there - for last 4 years now!