bad customer services.defamation of character

on Saturday 10 October i had an appointment at Perfect 10. My mother also had an appointment so we went together. My Dad paid for us both before our appointment after the treatment i was about to leave when i got called back into the store to be questioned if i had paid for a treatment on my upper lip. I didnt even go to do my upper lip but only my eyebrows. the lady safia who did the treatment only wiped my lip but accused me of doing my lip in front of all her clients. I was embarrassed and was humiliated in front of my entire family and her customers. I left as they said its ok and insinuated that i got a free treatment. I cried and went back to confirm if i had got the treatment i would have paid for it. The lady suhana who is the manager and may be the owner became defensive and started saying that its a mistake but the damage had already been done. My honesty and integrity was questioned and was really judged in poor light by her customers and staff.This is a clear case of defamation of character as the protocol of privacy had not been adhered to by the manager and staff. I was left furious, embarrassed and insulted. The half hearted forced apology will not suffice.