shame on you multichoice

so here we go again. My dstv subs due on the 13th, monthly. Last month I paid on the 11th, as I always do, and on the 13th they cut me off. Multichoice is a beneficiary on my account so all ref's are correct, they've worked for years, so why not now? for a week I call, I send emails, I send POPs, but despite it all they switch me on for a few hours, then cut me off claiming no payment. So I post on Hellopeter, and wow I get results, they find my payment and reconnect me on the 18th. So by my maths, my next subs are due on the 18th. Not so apparently according to Multichoices maths, so today they cut me off. Its NOT EVEN THE 13th ITS 12th!! AND AS I SAID IVE GOT TILL THE 18th. Their own poor accounting and I must pay for no service . SHAME ON YOU. ****TY SERVICE FROM AN ARROGANT SERVICE PROVIDER. Oh, sorry actually, not a 'service provider'. A 'non service provider'