DISAPPOINTED BY THE LEVEL OF SERVICE FROM STAFF!!!

So iv got 2 contracts with Cell C and i wanted to settle the one ***) after speaking with numerous agents and going to the Cell C store i have manually settled the advised amount of about R1800,i was then told to call the call centre 24 hours after payment is made to ensure that the cancellation takes place!So i call up and was then told to call on the last day of this month to ensure that i do not lose the benefits (my monthly data etc). Today i check my outstanding amount using *147# only to see that theres no amount owing for this month.So i think that the payment i made 2-3 weeks ago was probably used for this months invoice which covers both my contracts where as it should have been used to settle my one contract!So i call the call centre and i spoke to a lady by the name of Fikile in the billing dep which to my surprise tells me that i am in credit and cant tell me where the other money is, after 20mins she tells me that i need to be transferred to the cancellation dep as im explaining myself the guy shouted at me and transferred me to the activations team where i spoke with Maria and the call got cut! 3 hours later-no response from Cell C even after emailing!!!