NO INTERNATIONAL ROAMING FOR 6 WEEKS

We went overseas on 31 May only to find on the other side that we had no international roaming despite always having had the service previously. We eventually got in touch with our local MTN store where we do all our cellphone business. Our contact there, Simon, tried to assist us but could not because of the MTN strike. We have been trying since then to get our roaming sorted as we go out of the country again on Saturday, 11/7/2015. We still cannot get the service activated because there is nobody available at MTN so-called \customer care"to assist in doing this. This is totally unacceptable. Tried calling MTN head office and they don't answer their phones!!! What are we supposed to do now?? So much for \""customer care\""!!!"""