Suggest Treatment For Toe Infection

i got a toe infection as my toe was pierce by some sharp object and the wound knock into other sharp objects which worsened the condition. i saw a doctor and he gave me some potassium permanganate dilute solution, gel like paraffin oil and a cream to stop irritation. i have applied them for a few weeks. the initial infection that affected the skin near the nail recovered slightly but the rest remains the same. there are cracks on the wounds. what should i do?