Wrongly serve

Im very fustrated I think 2 months ago I bought 60 gigs days 60gigs night from telkom at that time it was costing R550 something like that. I Paid but didnt receive the full package only 60 gigs day time. After a month of usage I realise that I didn't had night gigs went back to telkom they recognize their mistake and I open an inquiry on the 23 september *** the say the will come back to me in 24 hours. The never did it I call again last week to find out what's happening the say technician are working on it to give me back the 60 gigs night service this is the end of the week never receive any call. I'm getting tired and frustrated I do believe I paid for 60gigs × 2 I received on 1. I want my half money back as I dont need those gigs anymore as I already purchased for another 60Gigs × 2. It was clearly your mistake as you never deliver was you charge me for. Hope I will receive a phone call with a solution of this as I want my money back don't need those gigs anymore