Two SIM cards on same contract - not allowed due to it being promotional contract?

<p>App**** for a contract on MTN during the Fri-yay promotion on 13th January 2017. The agent said I can have two SIMs on the same contract. However, after signing the contract, receiving the phone and doing a MSISDN number swap, I was told by a MTN store that I am not allowed to have two SIM cards on the same contract as this was a promotional offer - which is why I took the contract in the first place...</p> <p> </p> <p>I have gone through all the effort of getting my Vodacom number ported to a MTN contract, but I am now dissapointed as I was not sold what was offered to me - the ability to have two SIMs on the same contract.</p> <p> </p> <p>From a legal aspect, I would appreciate if someone could indicate that the contract agreement entered into by myself and MTN does indeed state that due to it being a promotional offer Dual SIM cards are not allowed - in which case I would retract my complaint.</p>