Edgars refusal to close account

I instructed Edgars to close my account in March 2020. Edgars then sent me a sms that I still owed them a small balance which I paid this was due to fees that had not been taken off. After numerous attempts I did finally reach somebody who advised me that they had not closed the account and that any future fees would be reversed. I was also informed that the account would be closed. Clearly this was not the case. A few days ago I received an sms from Edgars stating that I owe them R145.10. I have tried to contact Edgars via e-mail. I am still waiting for a response. I receive their automated response but nobody is getting back to me. I have received further sms to contact them on their ***number and was told via their IVR that they are not dealing with this account. I was referred to via the IVR to contact their *** number and the lady on the phone advised that she can do nothing with my account and could not advise who I could contact. I am so angry about this as it is taking up my time and I don't owe them any money. At this point I will not enter an Edgars store as I feel that as a customer of theirs for over 35 years have been treated very badly. I sure hope that somebody can get back to me to resolve this.