Customer service non existent

I should have known when I tried to sign up for Vox voice calling 3 months ago and a consultant asked me for an ID copy and promised to finalise the sale and still didn’t that they don’t care about their brand at all. Fast forward I was assisted with the sale and now I’m struggling with the after sale, I spoke to a technician on the 7th to assist with the app ad it keeps on saying unauthorised. He told me to drop the call to test the app as he pretended to have fixed the issue and he was going to call me after 5 minutes, well it’s been 5 days now. If you can’t deliver the services I paid for refund my money and cancel the stupid month to month contract cause I’ve got no money to waste!