MWEB - Not dropping prices for old clients

Have to say that I am generally happy with MWEB, Ill give them that. The incident in question is the second time that MWEB has pulled this off with me and It really drove me mad. After checking my fibre account over a year ago I phoned in and asked why Im paying more for my 100/100 mbps account than advertised. The agent said that its a premium line so I thought none the less, kept paying the difference. A few weeks ago I was on their website once again checking pricing and couldnt find my "premium" prodcut of R 1059 for 100/100mbps with Vuma. SO phoned in AGAIN only to be told that when they dropped their price they kept their old clients on the old price, saying that they offered a voip line with the service, Which I never signed up for and never used. Agent quickly noted that an email was sent and if I wanted to price drop I should have let them know ?!!! Does this make any sense. When they put up their prices, I dont receive emails asking if I would like to pay more....they just charge you. Surely, Surely the opposite applies? Sis on you MWEB I mentioned this to a colleague and he told me he left you guys a few years back for the same reason. Look after your old clients man, cmon!!!!