psd calls

I upgraded to a new contract and now 15 days later the account has been suspended. I logged on to mtn active and saw that more than R1000 has been charged for psd calls. I was assured by the consultant who did the upgrade that the contract is limited and we can simply add more data and airtime as and when required. This is unacceptable to charge this money for no reason. There is data and airtime loaded...what are these charges for?<br> <br> 80i does not work as they are striking and nobody can help to resolve the suspension. I will not pay the psd charges.