Deposit outstanding when I paid in advance

<p>I paid a deposit of R500 on the 29th of March 2017 and used a reference number I had been given by my agent, fast forward to the 19th of April I get an invoice, on it I owe R500 (deposit) plus interest and R25,65 for the month so far. I contact Diedrich who sent me the invoice and I explain that I paid the R500 so it should be credit on my account and I shouldn't be charged interest, they later on respond and tell me the interest has been removed but no mention of the R500. Numerous calls were made to Protear metering customer service to only be told the same thing over and over that I should email the proof of payment. I then contacted Petro tha lady who initially contacted me regarding creation of an account I sent all the documents, I explained to her that I'm still being billed for R500 I already paid, she later informs me that I used the wrong reference, I was given the reference by my agent and trusted that it is correct as they deal with each other on the regular. I'm yet to get a response from them regarding the investigation because I was told my money was allocated to another smart prepaid clients account as we have the same reference how is that possible. On Friday the 5th of May I receive an email from Mistique who informed me that she is working on my account and she needs my receip of payment, the date of payment and ref I used ( I sent it again). Waiting for an answer which most probably I'll get after along time. It's apparent to me that Protea metering want me to live with no waiting and I just moved in to this complex. It hasn't even been 6 months and already problems. Due to this I can't even buy electricity at Spar or ATMs because my account is overdue by R492 LOL this is crazy, I haven't received an invoice for tha crazy amount how can one person utilize R492 worth of water and sewerage when I only moved in to that apartment on the 10 April 2017. </p>