VOIP lines app**** for in Oct 2022 still not working

We app**** for a VOIP Line through Vodacom October 2022 and still have no active lines… we have the phones and they have installed the router but our lines still don’t work.. We just get diverted from person to person and if we call the call center they simple say they can’t deal with it as it’s a instore application. When we go instore they can’t give us answers. They read out a email that they sent where they addressed us as the “ANNOYING CUSTOMER” We want to cancel the VOIP System and we’re told that can also take months to do.. at this point we want to remove all our contracts from them due to the pathetic service we received.