Where is my money!!!! Why do i have to wait another day, when you've had my money for 5 months. Where is my reconciliation?

This company will do their very best to not pay you the money due to you. They will use every excuse in the book, from not verified account number to special payment dates to refunds and re-imbur*****t don't come from the same account etc etc etc. Had two prepaid meters installed in my house and cottage in November 2018, the payment went off twice and I had to fight to get the double payment refunded, Which was finally done weeks later. Now ALMOST APRIL 2019 I still don't have a single cent paid to me for utilities that were used on the prepaid meters. Their excuse, although they made a payment to my account before is that my account isn't verified. I have to constantly call, and mail them, they do not effort to sort the issue out. I requested a reconciliation, because at this point I doubt that I will get all the money due to me, but nothing is forthcoming. Thank goodness i have every slip and payment for prepaid so I can compare. They love the fact that my money is in their account drawing interest. Lets just say if ten customers have the same issue I have over a period of a couple months, think of the interest that is earned on their account at the cost of the customer.