SIM not working and poor service from call center

I bought a phone and from day 1 which was the 31 July 2018 the SIM never worked I called same day and a lady advised me there was technical issues and it will be sorted out with in 24 hours. 24 hours later still nothing I decide to call again and spoke to an unhelpful lady called Palesa at call center and she told me there is nothing she can do??? So what does she expect me to say am angry an very dissatisfied I have been with Vodacom for years and to receive such services is very disappointing I need my sim card to be fixed ASAP.