Harassment

I keep getting voicemail messages from this company (phone does NOT ring - goes straight to voicemail) and callers either give the silent treatment or speak so fast and so badly that you cannot understand a word they say. One message that I manged to get the gist of (sounded like Refiloe calling) gave a reference number and what sounded like Old Mutual. Phoned the company to stop harassing me and they claimed they have not made calls to my number. Only at least once a day over the last 2 weeks!