Wow MWEB - No support to resolve LTE matter!!!!

I signed up for a LTE contract for 25g + 25g promotional data. This I upgraded to a 120g contract effective 1 March 2018. It seemed everything was fine as PAYMENT WAS COLLECTED PROMPTLY!!!!!! The issue can in with the data - although I am paying for a 120g contract it is reflecting as a 50g contract. I have constantly been questioning this since the 1st and have no speaking to no less than 3 different agents, who all promised me resolution possibly within 24h but definitely within 48. Well guess what - it has now been 7 days!!!!! I get no feedback and no solution. I constantly have to call them via call centre hold the line for like 20 min and if by change they are not on another call, I can perhaps be lucky enough to get hold of them. Despite having requested to speak to a manager, I simply cannot get beyond the call agents!!!!!! The now data cap of 50g is bound to be reached soon and then my internet will not be available. I am not sure if the service provider to MWEB - RAIN perhaps can intervene to have the matter resolved????? If this is not resolved soon MWEB will leave me no choice but to go somewhere else????