Qubist refusing to refund me.

I bought a hair clipper online on 05/05/2021 and it was delivered to me on 07/05/2021. On the same day, I discovered it was not working and I quickly sent an email(note I have a video recording of the faulty hair clipper) and asked for the hair clipper to be replaced. They only replaced it after a full month of me constantly sending emails and dealing with their lies, them telling me they called when they didn't.

They delivered a second hair clipper on 09/05/2021. I quickly tested it and again, this one is not working too. I quickly sent an email requesting for my full refund and since then I've been waiting for someone to collect the hair clipper and process my refund, The Manager has constantly been ignoring my emails when I've been asking for feedback. I'm really disgusted by their customer service. I don't think you should make a purchase of anything from their online stores because they give you a runaround.