WHY CANT I CHECK MY DATA BALANCE ON WIFI ROUTER??

So I renewed my contract last week, new phone and new package and took out a huawei pocket wifi router contract to supplement my data usage, problem is i cant check the balance without needing to call in, who the hell has time to do that??? ussd codes only provide me info of my mobile contract and nothing regarding the data line. When I call in they tell me that i need to put the sim from the router into my phone, except i cant even do that because the fool who sold me the router sold me the normal sim, which doesn't work on the micro sim phone.<br> I believe due to consumer protection I may cancel these contracts and return the items to cell c within 30 days, If i am unable to find out what my usage is I will indeed do this, i expect that cell c provide me the an online or ussd solution AND a microsim at their cost, or I cancel and move to Vodacom where I KNOW they can provide me with this service.