Harassment from MBD

I got an sms on the 20th of March 2019 from MBD saying my tv licence account was handed over to them, I had no idea that it was due for renewal, thanks to the useless sabc for not letting me know before handing it over. I called MBD on the 22nd of March 2019 to find out how much was due, using my work phone. For some strange, stupid reason, they saved my work number on their system. From yesterday, I have been getting calls on my work line from MBD attorneys, after telling them to please call me on my cellphone, which they didn't. I settled that overdue tv licence account yesterday morning, yet they still harassed me this morning and I refused to engage with them unless they call me on my cellphone.

This is harassment on another level.