Hissense and Showmax compatibility

Ever since the new showmax is in affect, we cannot watch it from our TV. I pay a monthly subscription for something i dont have access to. HISENSE informed via telephone i must upgrade my software , I have done it. TWO MONTHS later I sit with the same UNRESOLVED issue. The second excuse was, hisense is CURRENTLY working with showmax to resolve the technical issue with the the App, ALSO TWO MONTHS AGO? Why must i buy a new device ??? This is a pathetic excuse. Hisense must NOT call it customer service because they dont know what that words mean. The same applies for Showmax!!