Vodacom service is appauling

I have had a terrible experience with Vodacom,had lost my done reported my fone missing they blacklisted my fone and did my Sim swap my simcard is working but I cannot use internet have called vodacom several times they sent me internet settings nothing is working have inserted a diff Sim card on my fone internet connection is there but not wit vodaxom I have bough a gig of data which cost me 149.99 I am not able to use it and cntbe refunded which is an error from their end I can only receive and make calls cntise internet which 1 of the advisors said to me I would have to go to the technicians which o would be charged to get my Sim card checked I do not understand why I should be doing that I just want my money back and WL not be using the service provider again.