Dealing with call centre after phone was ******

I tried to block my sim after my phone was ******. First all i could only phone from a Vodacom nr and 082 number, and not having a cellphone and only a landline this was difficult to do. After i had to borrow someone's phone i got through to the call centre. I could not even hear my call centre agent as the colleagues in the back where laughing and talking so loud. Extremely unprofessional. After they blocked my sim they could only sms me the reference nr. So how on earth must i get it if i dont have a cell nr. To make matters worse they also blocked my additional sim. so now completely without any mobile contact. Unbelievable. How a company that is suppose to be in the top 3 just delivers such poor service.