Annoying recordings as phonecalls!!

I work at a company and part of my duties is answering the phone when reception is on a call, we are both getting calls on the work phone daily from a recording giving a number to call and \arrange payment\". I then phoned the number to find out it is a Standard Bank call centre. One of our employees gave the work telephone number as his own, when I asked for the number to be removed I was told that they cannot do this as it is the employees personal details. I explained that it is a company telephone and that it is a nuisance, the lady on the other side became very snotty towards me and said I can talk to a team leader. I got put through with no luck. We are still receiving calls from this recording."