Incorrect/NonDebits puttting account in arrears.

<p>I am very annoyed with the service from MTN, I took out a contract with them about 10 months ago, and it went south almost immediately, the debit orders either don't go off on the agreed date (which is the 20th of each month) or judging from my bank statement, they do not go off at all, I don't have control or even keep tabs on this because I assume that they can handle something is minor as this. I am tired of MTN not debiting my account timeously and correctly and then calling me to threaten me wit all types of action, they don't debit my bank account and then they demand large sums of money, THAT I DO NOT HAVE, hence my contract. I want to pay off my account but their unprofessionalism makes it extremely difficult. I have proof on my bank statements that they either debit 3 days later or not at all, I cannot pay large sums of money towards this contract, hence I took out a monthly contract where I can pay 488.99 p/m, they have blocked my phone and haven't really communicated anything, this is frustrating because it affects my credit record and I am planning on applying for rental of accommodation.</p>