Getting no help from OVO

Opened an account this morning. 4 calls later getting 4 different answers as to whether my meters are working or not and if not when they went down. Wrong payment amounts credited to meter (less than what I paid). Language barriers on the calls. (I only speak English). Being transferred to different departments as no one seems to know what they are doing.  And if the answer isn’t on their script they don’t know what to say. 
Unable to pay on App, online, or in a shop  

How can I get a resolution?