Harassment regarding reopening of store account

I opened a clothing account with Edgars at the beginning of 2019, used it, paid it off and closed it towards the end of the same year. My account was always up to date during its use and I was told that i could come and reactive it anytime i wanted.

I have been receiving a lot of calls, SMSes and emails from Edgars since i closed my account trying to get me to reopen the account. I have made it clear that i do not want to reopen the account, and that, I would like to receive no more calls, SMSes and emails but they will not stop. I am using the true caller application and i can sometimes see some of their calls as they came through and ignore them. I do not understand how Edcon would suppose that i would reopen my account when i have made it clear that i feel harassed by the company.