Vodacom Impacting My Credit Score

So, I’ve got a sim only data contract with Vodacom, and since my upgrade (September 2019) they’ve never “successfully” processed a debit order on time and I’ve had to to do direct deposits and this has been after I tried to apply for car finance and I was given a huge interest rate because of my non-paying behavior.

I’ve raised this with multiple Vodacom consultants and they always tell me: “your debit order is active and should go through the following period” but this hasn’t been the case at all. Yesterday I checked if it was going to go through (27.04.2020) considering it’s been a public holiday and 25th falling over the weekend etc. it never did, and I made a call today (29.04.2020) and I’ve just been told “ your debit order is active and should’ve gone through yesterday, and that they will escalate to consultant in head office and I shall wait for either an sms or a phone call if am lucky”.

Truth of the matter is already am on the negative side of honoring my monthly payment and this will go against me when I approach yet again a bank for finance. I’ve thought of canceling the contract however as you know I’ll be liable for huge amounts to cancel the contract prematurely.

I’m in a very bad space and not sure whether this will ever go away, am trapped. I admire Vodacom but the service I’ve been receiving is really bad, damaging and costly