MTN is ****ming customers with they're "month to month WiFi"

MTN is taking people for a ride and I can proudly say they ****ming South Africans.I recently purchased they're so called "month to month"routers and they seemed really reasonable instead of a contract that binds customers.Ever since we purchased these 2 routers,they always going offline and not connecting to the internet.So when we returned 1 router,now they tell us that we can't cancel because we owe,but how do we ower when its month to month?This whole nightmare started with they're sales people at they're stores, specifically Big MTN Clearwater store and Key west mall,the agents at theses stores dont even know how to explain to customers about they're products,all they want to do is sell us this none working routers.As i want to return the routers,only now they tell us we use the service and then pay at the end of that month,but when making that purchase,none of this was explained.The other problem with them is that when making the purchase,you pay for the connection fee and sim,which us understandable,and then pay for the mentioned service amount immediately.So after that how does one pay at the end of the month when you've already payed before using they're service?Id like to warn south africans not to fall for the MTN **** of the month to month wifi.Its a ****