Poor Service

I was recently approached by an FNB connect consultant to subscribe to a 24 month contract with FNB connect of which I agreed, I was advised to port my current cellphone number to the new network. The new sim card has been delivered and it seems like its not compatible with my tablet, I went to the nearby branch hoping they will assist but I was given the costumer service number because they were not able to assist me. Called the customer service several times with no luck, when eventually someone picked up I was told the system was down and they could neither log my complaint or assist me with my device, since I asked the guy to call me back on my hubbies number when the system is back until this day I haven't received any call and I'm still not connected. I feel so frustrated because my previous sim card is already cancelled and this one is not working either.