Useless..... Completely useless

Ok, so I make online payments to cell c on a monthly basis and never had an issue before. Made a payment for the month of August and got an sms saying no payment was received. Called the call centre, was given [Email Removed] Thought no problem, emailed them the POP and then a few days later my account was suspended. I called them and they apparently did not receive the POP so emailed them again. Sent it twice just to make sure and they unsuspended my line for 48 hours awaiting the POO. After sending them there POO's (proof of payments) they suspended my line again today saying that I am in arears and need to pay the outstanding amount. What the hell???? Who's these emails going to?? I use this line for business and need it open at all times, the inconvenience it has caused me cannot be explained and really think the service I have been given is completely ****. I usually do not get upset but this has my blood boiling, CAN THE PEOPLE/EMPLOYEES at CELLC please do their jobs and stop inconveniencing me as a result of some employees stupidity. So many complaints made against this company, wonder if my case will even be looked at. BTW, emailed the POO again!!!!! 5 timesNOW