Dstv internet wifi

Good day

I have the dstv internet WiFi deal , I miss placed it my SIM card last month I have contacted the call centers even went to the dstv agent I’m not getting any help and no is giving me any feedback even on emails, they only say I must go to a walk in center which is not available in Nelspruit(mpumalanga) is only available in Gauteng which is I must travel more than 400km to only go there for a SIM card replacement,they even refuse to let me go to MTN center to get a SIM swap this is very sad coz now I ddnt use my data for this whole month while I paid for them and the dstv call centers they are ***** and useless coz they always take my details but no feedback they always say they are escalating it . Please assist me to cancel this thing