MWEB sales: Poor service delivery on fibre product

Signed for an upgrade to Fiber on 2 Nov 2018 with Mweb and SADV. Fibre was already install in my house by SADV. MWEB Router was delivered to my property by 13 Nov 2018/ Made the call to Mweb as requested to activate my connection. Mweb informed that it should be connected within 24 Hours, now in th 7th day! Still no connection or response from Sales department. My queries on Mweb website only response is that my queries were forwarded to SALES department. So what now? Who is responsible for poor service. Mweb or SADV?