Disappointed client of telkom

I've been using telkom prepaid sim for almost a year now,until recently (3 days ago) when my phone started showing the no service or emergency calls only message,I called telkom customer care and I was told the simcard is closed,when I asked why they told me it normally happens when the SIM has not been in use for a month or so,funny I use my sim daily I was told they'll escalate the matter and call me,well the following day I called them again and this time I was told my sim reached it's expiry date and the number will be recycled ,first time i heard of such.My concerned is during this lockdown I get calls from work as to what needs to be done,that number is registered with the institute im studying with,it's linked to my banking profile... sad thing is with all consultants I spoke to no one is capable of assisting me,does telkom really know the importance of our contact number to us and what they cost us with their incompetence im really disappointed and honestly telkom is really doing the worst job at keeping clients happy