Telkom cancelled my prepaid line without warning after I paid my annual subscription

I paid my annual subscription for the waya waya service in May 2019 although it was due in June 2019. I had visited two stores and called all departments in the call centre, only to be told that this was an error at telkom and that my line can’t be reinstated. This is the phone number of my deceased husband and now his family in SA and abroad are unable to contact me. I want this line reinstated.