Wesbank unfair repossession

I have been in arrears with my car payment which I then arranged a lump sum payment which was made. I then contacted the bank and arranged a monthly payment of 5k p/m which was accepted and I kept to the arrangement. Now I have been receiving calls and texts from a repo company threatening and harassing me constantly. They are making claims that they will come to my house with the sheriff and reposess my vehicle. I have also requested how much is outstanding and the person claiming to be the repo company can't give me an update.

I have also been told that a judgement was raised against me even though I have kept to the agreement made between the bank and myself.