Urgent request to make contact

Good day I was so excited to receive my TV from teljoy delivery was quick and I was really impress I got an Sms stating an agent Will call me no one did but my delivery was done on the 30 Dec I decided to pay myself because I do not want arrears or a vd credit record... I use the ref on my statement and paid my acc problem is now I have to pay reversal for debit order and I keep getting Sms for mom payment debit order was reversed twice and I have to pay for it... I've send prove of payme t via email to the collection department but this is day 2/3 and no feedback I do not like this one bit... I would prefer making transfers from my bank to make sure this acc is paid is there some who can get bck to me this is not good service