girls who wear acrylic nails...I have a question.

Aurora
I have been wearing acrylic nails for about 6 years and I always have a problem with my natural nails growing and starting to seperate from the acrylic. I am an extreme nail biter so I will bite my nail trying to bite off my natural nail underneath. The lady at the nail salon always try's to take them off after a few fills and clip my nails down and apply new acrylics which costs more money. Do any of you have this problem? And is there any way to cut my natural nail without messing with my acrylics?