I am Devastated

After being promised 48hours by some Anthea at the call centre for my mtn sim to be migrated back to prepaid after paid up.I have now been given a further 1 to 7 days to wait. While my income entirely depend on this phone.my life at a standstill at the moment.Then I am told it's not our problem...we are only waiting for feedback from MTN. An awful lesson to myself and others in future to never take these kind of contracts now I am at their mercy..my life is ruined this is the number I depend on and now all I can do is wait can't even do sim swap nothing