Cell C not allocating my payment each & every month

I had a problem last month with Cell C not responding after numerous emails sending my proof of payment. Finally on 16 Nov my payment was allocated. Took them 3 weeks. I surprisingly received a reply from their proof of address this week. Cell C your service is pathetic as yet again my payment has not been allocated as I received my statement today & the payment I made on 26 November does not reflect!!!!!! I changed the reference number to my cell phone number as instructed by your call centre people!!!! Your staff seriously need to receive training or your HR need to employ people with a tat of intelligence not like the *********** idiots you currently have. I am truly beyond fed-up with your nonsense. There's also a amount of R113.61 that I do not know what for and after asking numerous times what it's for I as usual do not get any response from you.