Slow, or ****s and *******? Which are you???

After placing an order for a line move I receive confirmation that the cancellation date for my current service is 30 April. There was a complication and I had to take a more expensive service due to the Estate I am moving into. I contacted WebAfrica the same day with the details they would require and I received a confirmation email confirming that my new service will go live on the 1st of May. That SAME DAY they debited me pro-rata for the new service for April. I reversed the debit order and queried. I also then saw that they had loaded the cancellation for my current service as 31 May. I phoned them on the 26 (because trying to use the live chat function is slow, painful and fruitless). I was reassured that my service is cancelling on the 30th of April and that the order was placed for 1 May. Someone on their side pulled the trigger on my order too soon. Now today (29 April) I get an sms that I owe them R 1880 for both services PLUS and unpaid debit order fee of R 50 PLUS the pro rata that they charged for April...if I do not pay within 24 hours they will suspend my services