Pathetic service delivery

Cellc is a pathetic company that doesn't take their customers seriously... On the 30th of October my debit didn't go through due to insufficient funds in my account however on the 31st I had called cellc and asked them if I can make a manual payment of which the agent said I should and sent me banking details which I did make on the 1st cellc debited me as well now when I'm requesting a refund they are refusing they actually credited my cellc account which I clearly stated not to everyday I'm calling they keep opening a new case and then they call me say I should send my bank statement and then no feedback this is the third time they did this with no service delivery what so ever! The second thing is that I wanted to upgrade and they declined me due to my profile being flagged for debt review given I had a letter stating I could afford a cellphone contract so yet again I said IL still keep my contract let me try again and still they declined me yet I am cleared from debt review so I will be cancelling all 3 contracts. Cellc has lost their responsibility towards their service delivery and I hope all other consumers find other service providers they think by giving freebies it makes everything okay no it doesn't if the employees their give a damn!!!