Refused to take bloods

Today I am very disappointed and hurt as a mother that my daughter was refused to have her blood taken from Ampath Mercantile. My daughter called me from work as she is not feeling well, and is in pain. I took her to our Gp which prescribed bloods to be taken. She was diagnosed with Antiphospholipid Syndrome a few years ago. So her inr bloods have to be checked regularly as she is on chronic Warfarin. The bloods determine how she should take the Warfarin every day to prevent blood clots to form. We waited for over an hour as the sister was alone and needed some guidance regarding which form to complete. As she could not reach the inr clinic sisters she refused to take the blood. I even asked her how we gonna know how my daughter must take her pills from tonight. Never in my nursing career have I ever come across a situation where a patient was refused to take her bloods. I am very hurt. As it is public holiday we have to wait for Tuesday to take her bloods. And anything can happen to her