Mweb faulty installation, doesn't help their customers

I'm a new customer signing up. Mweb did a faulty installation after almost 3 weeks of waiting, just to tell me that they can't tell me when it will possibly be fixed and will charge a callout fee. On top of that they billing me and I've never even been able to use their product in the first place. This is disgusting, mweb needs to fix the job they didn't do properly in the first place and I shouldn't pay exstra for them to come out and fix the installation they didn't do correctly in the beginning.