Harassment

I am very disappointed in this service I been a customer for more then 7 years had personal loans which all has been settled already. I took a credit card have this card now for 5 years. all of the sudden I am receiving calls or should I say I am being harass by African Bank. I am now being told I skipped a payment in 2021 . I told the consultant is this is the case why was I not contacted in 2021 why am I only being contacted 4 years later since then African bank has been calling me none stop from 07h00 in the morning till 20h00 at night and this calls is like every 20 minutes I was told I owe R500 so is this how customers are being treated I been paying my instalment every month on time never late or short this is really abuse I am receiving like I am typing this I already received 4 calls . So I will definitely be paying this credit card up as soon as possible and have no dealings with African Bank I must say this is the worse experience ever from any financial service I ever experience.