Paid for service that was never rendered.

I am still disappointed in VUMATEL. This is my third review because nothing has been said or done. I paid on the 24th of February 2024 they told me to send proof of payment which I did. I experienced difficulties with them even to the point where I’d leave my keys at the neighbours so they could be granted access when they come to install still nothing has happened. I said ok rather reimburse me so I can get another host to help. They are still quiet about that aswell and I’m sad because I work from home and I buy data. What can I do as a customer to be taken seriously by these people ? Do I wait for them once again to attempt to get installed because I paid for a service that was never rendered and when I come here they say they sent me a personal message which is not the case. I need help.