DSTV!!! Now you are really annoying me

So I wrote on 29 June expressing my unhappiness with DSTV and that they keep phoning me for an account belonging to a Ms Nadia. DSTV responded a day later and said they will sort this out. They also phoned me and promised me that it will not happen again and that they have removed my number. Guess what? Yesterday 11 July a Zandile Ncumisa phoned around 14:00 asking to speak to Nadia. Really DSTV, what have I done to deserve such nagging from you? This is so so inconsiderate and unprofessional.