Trapped on a contract

I have been a loyal client of Cell C for over 6 years now. My last recent contract expired then I decided to go on a month to month contract because of my job uncer*****ies, now in March the unfortunate happened as I lost my income and I called Cell C just before the end of March to request a migration to a cheaper package so I can remain a client till things go back to normal***, the gentleman I spoke to advised me that the cancellation department will only be back after the lockdown and they could only assist me then, fortunately I was able to pay. After the lockdown I called to request that reduction, the friendly lady from customer service assisted in logging a call to the cancellation department. Yesterday I received a call from the cancellation department and regardless of telling her that I called in to request this in march she still insisted that I still need to serve a month's notice, we argued for a while until we agreed that she was going to listen to the recording. She returned the call today stating that it is possible but the because I used some of the benefits its not going to happen. I mean how do I not use my phone for 6 days, I made sure that I do not touch the Data and SMSs but how do I not use my only phone. Right now I am trapped not knowing where the money is going to come from.