Dissatisfied Customer

I have now been a MTN customer for over 10years with two contracts and had minor problems in the past which were addressed but recently acquired a third contract. Since then my phone has been suspended on numerous occasions and had endless problems reconnecting due to a credit limit that came into effect.I have spoken to several constants/ service champions who has failed to solve my reconnection problem. My dual sim(internet) has been off for 5weeks now and this in effect means that MTN has broken contract with me for service not delivered as I have not missed any payments thus far. It would be appreciated if someone could look into this matter before I take legal action.