Poor service

i app**** for a contract and at first experienced alot of issues with them adding all the wrong information yet i did provide them with copies of all my documentation and then was advised that i would be contacted to arrange delivery. after a few days, i get a call from the mtn call centre agent that processed my details saying Dsv has the wrong contact number for me and that she had given them the correct one and that i should be aware cause i would receieve a call lastest by the next day but that did not happen. then i called DSV and gave my correct details they promised to contact me no later by the end of the day , waited but recieved no call. So today i call mtn again and they put me throught to DSV who then tells me they have the wrong contact number for me and will update the info and get back to me before the end of the day.....it is really very fustrating to have to deal with unprofessional people.. i am really ****ed off cause each time you phone these 2 companys you have to hold for half an hour to get someone on the phone....mtn from the service level you had to what it is now its really disapointing.