payed R11 but still account not updated

Hi,<br> I used to a client of cellc prepaid, and there is a service that they offer if you do not have airtime allows you to loan R10 and pay it later when you recharge your account with airtime.<br> but in my case i changed network to mtn and kept the same number.<br> <br> and made arrange ment with cellc to pay the R10 owe to them,<br> they gave me the account number to deposit R11 and send proof of payment to them and it will be sorted.<br> <br> So I did payR11 and send email to [Email Removed] but i get many sms saying I still owe them R11.called cellc numerous times but no help...<br> I want them to update the account and stop sending me sms they gave me two case numbers: *** and ***