Feedback, rude, lies.

I've been battling with this person to get my prescription letter, the stuff is very rude they give false information and after that they don't even answer their phone, I spoke to qcanza I don't even know how to pronounce her name, she said she will lodge a complaint and she will give me feedback today even now nothing, I asked for manager they said I must email her still they can't reply or get back to you, today I tried calling them no one is picking the phone, can anyone please telle where can I lodge a formal complaint about this company.