MTN must tell us if they do no longer wish to service us as customers

MTN must tell us if they do no longer wish to service us as customers. At the start of stage 1 my mtn network from both fone and wife became non existing from that Thursday till Monday 22/11. On sartuday I went to Durban central MTN cnr field and west..I wanted to sim swop the system was down. I waited for almost an hour still I could not sim swop. Today I went back again which means from sartuday 20th/11 till today 23/11 around 4:15 the time I was there thy r stil offline??? MTN must close its doors if they have failed pls. This nonsense service its intolerable how do I work from home??