Poor account and finance management

I am so unhappy with this supplier. I moved in my new home over a month ago. I had issues with the services I was getting however I was happy when the house was handed over as I was done with the poor service. I did not know that I will still be after this company. There is a deposit of R1 343 that is due to the municipality from this company. I have complained and I am still waiting. Last time on hello peter I was told that the water meter was not going to be issued if payment was not made and a proof of payment was to be sent. The municipality said that is not true and guess what I am still waiting for the proof of payment. Reached out to agent that assisted me with getting a house and he always promises to get back to me but does not. I am really not sure how other companies are run, if payment has been made what is so difficult with getting proof of payment. The bank has paid a significant account and they just fail to pay an amount due by them. I really don't know what to do now, received my statement today and payment is still not reflecting. I have a friend who is in a process of getting a house and was given a list of suppliers that the bank works well with, I was not suprised when she told me that cosmopolitan is not included in the list. I am so fed up.