Harassment

For the past 6-12 Months I have received about 3 calls a day from MBD debt collectors looking for a Miss Nelisiwe, I have explained to them on numerous occasions that they have the wrong number, on one ocassion I managed to get put through to the call centre manager who assured me that my number would be taken off their system, it clearly hasn't been done as I am still recieving calls and SMS's from MBD, when i ask to speak to their manager their rude *********** staff just put the phone down on me.