Poor service

On the 15 November I called into ibtellucell to make arrangements on my outstanding account I spoke to sweetness who assisted me in making the arrangements on my account I advised I needed banking details as well as a copy of the arrangement via email,I called in later the same day to ask when I get the email I was told by amina I would get at the close of the business day of the 15 November I never received this email. I called back on 16 November 2018 and spoke to amina once again who advised that the email was reqested and I had to wait,when I advised her she said close of business the previous day,she rudely told me that she is a customer service agent and just had to be patient, I kept on waiting up until now no email has been sent regarding the payment arrangement,no banking details ,the service I am receiving is poor to say the least