My personal info have been provided to Mondo

Good day<br> <br> I have been receiving numerous unsolicited calls from telemarketers Mondo!!! They are pushy and extremely irritating and pretending to be part of Vodacom, so they say no problem with them being provided with my name and number!!!<br> I am not interested in their offerings and have asked to be removed from their contact list, but that is not happening.<br> <br> Vodacom, I HAVE NEVER GIVEN YOU PERMISSION TO PROVIDE ANY OTHER COMPANY WITH MY NAME, NUMBER OR ANY OTHER INFORMATION!!!!!<br> <br> Kindly rectify this situation ASAP.<br> <br> A McCarthy