Harassed by Blake and Associates over someone else's DStv account subscription arrears

Blake and Associates is pursuing me, an ordinary citizen, in my personal capacity for DStv subscription account arrears of an internal Multichoice DStv company account (***6) named DStv Media Sales (Pty) Ltd. Blake and Ass (pun intentional) refuse to communicate or provide either a statement of account or a DStv subscription contract via email, which I have previously provided as ***, because the account statement does not bear my name but rather it belongs to an organisational subscription account owned by Multichoice DStv company themselves. Blake and Ass are merely harassing me into settling someone else's DStv account arrears purely because someone has captured my mobile phone into the contract document. I have no affiliation with Multichoice Dstv.