Poor customer service

My sister a month or so ago approached Vodacom for wifi installation 31of May mweb would be ending due to us canceling the contract because the price was getting more expensive . However Vodacom are still not getting back to us and as a result will be without wifi. The people who are supposed to be sorting out our wifi have not responded to one email or phone call that my sister has made. So I ask Vodacom what is going on with the customer service