I know what you mean. I had the same problem! I tried every different brand over the 15 years that I was on the pill, and NONE of them helped with heavy flow or cramps. Since I've quit, over a year ago, I've noticed less pain and the heavy flow only lasts 3 days instead of 7, like it did when I was on the pill.
A lot of women have reported not having a period at all on Loestrin24FE. If you don't mind not having a period, you might want to look into it. But recognize that every pill carries side effects, some of which are more unbearable than others for most normal people.