Collections/payment office not on par

Have been having issues with Vodacom since upgrading my contract since January. Previous contract of 2 years was paid eft between 5 till the 7 no hassles. Every month this year the Collection office blocks my phone before the 5th I have to make payment and send the proof of payment for them to un block with no access to data I have to go and find a place where I can send this to them.

Sent this through to them today after 10am waited till 13h30 to find out what the hold up is only to find out that they only work on Sat till 1pm and only coming back on Monday. This is not what the lady told me she said she was going to call later today to find out if I have been sorted??

So my review is bad cause I have no other way to sort this out but by Monday. Really not impressed been put in a situation that wasn't created by me. If they checked my history I've always been paying on the same dates I also even sent them a letter and bank statements from my work 2yrs ago that shows this. Has this now been archived or what!!!