BEING HARASSED FOR MY EX HUSBANDS DEBT

These people call me every single day, sometimes more than once a day. They also send me SMS's and leave voice messages which you can't even understand as they speak so badly. I am tired of being harassed by these people for a Woolworths account that belongs to my soon to be ex Husband. I have given them his contact number numerous times but yet they still phone me. I am not liable for his debt. I sorted this account out a few months ago and now it is in arrears again. I have advised them and sent them a copy of our ANC contract. No matter how many times I block and report the number they just call from another one. And they have no clue how to pronouce names correctly.