Breast lump biopsy

Hi guys I have one question is here in uk any private doctor Can do the breast lump biopsy , my misses is being in pain for 5 months and the hospital discharge her and also the doctor on her GP , we took to private doctor for a scan and there are some black lump the final result , well end of history my misses still in pain cannot sleep from one side and the hospital just discharged her saying there is nothing , and when she call gp her doctor just said he can't do nothing about it because of the hospital , please if someone could help me i appreciate . Thanks