I had injured By twisting violently my thumb accidentally. I have recommendation that make me tried the method of Chinese herbal therapy, I went every day to replace new herbal medication. They charge fees for each time $50 cdn .They made a patch of herb medicine covered injury spot. Totally I have spent $650. After that I requested the receipt to claim income tax for medical expensive. They said I have to pay back HST for that services. Are they intend to do business without submit any tax to revenue of Canada by cash deal ???????