Half the job done and tough luck...

So i had an Adsl line installed yesterday morning. This is a brand new telkom line. Installation was suppose to take place on 6 Jan and finally when it did yesterday only half was done. The router is on and connected and that's about it!!!! The number given to me still belongs to someone else and when I queried yesterday I was told that I must phone today but told today that sales is closed and I must phone back on monday! !!!!! Really?????? People that installed never explain anything. Was told to read the manual and they left so now still without service and paying a fortune in cellphone bills as I need to follow up and hold on for 30 mins at a time!!!!!! You obviously do not value your customers and hold us at ransom because you are the only landline provider. Shame on you for the shocking shocking experience!!!!!