1 month waiting period for an installation of dsl

Telkom have given me a ridiculous time frame for the installation of my business dsl and landlines. The agreement was signed on the 2015/09/08 and deposit for the installation was R700 which was paid on the same day. I receive an sms today that the installation will occur on the 2015/10/06. This is absolutely ridiculous and horrifying when considering the turn around times, Telkom cannot handle the demand of their new customers. I was promised by the consultant when signing up that the installation will be scheduled between 1-3 weeks. Furthermore Telkom does not refund the deposit that I've made, even though they allowed to make empty promises. I am truly upset that the largest telecom provider of sa, has such poor service. I cannot believe that an installation of a cable has a waiting period of 1 month. If Telkom cannot meet the demand, they should hire more staff and if they cannot hire more staff, they should shut their doors. I received the scheduled appointment for 2015/10/06 after 6 days of payment.