Bad service, costing clients money

Hello, IT seems as if i am only having bad luck lately with service extra, I am a new client to telkom however I had moved my bank from capitec to Discovery Bank, I called telkom on the 18th of last month to update my profile and for them to only debit my new account at then end of this month, so last months payment was still for capitec to be debit, well to my surprise they go and debit Discovery Bank witch did not have the amount in for the debt order so it was sent back, I then called in to find out what was going on and why did they do this after I had called in and explained everything to them, the lady who helped me in accounts said everything is fine capitec will be debt and at then end of this month the new account, so who gave then permission to debit Discovery last month, they could not awser me on that, then I asked who is going to pay the charges of the debit that went back witch on my platinum account is 180 rand, oh no sir I really don't know who, and I asked the score drop on my personal profile for debit order sent back who is going to fix that no response, anyway I was told to go pay cash now and have somewhat more charges to my account, I really wish that these companies would see how frustrating they make their clients, I ordered a laptop from telkom Huawei D15 laptop they sent me a macer tablet I really don't understand this, I then told them to go back to the voice recorder and let me know where this product was ever discussed I'm still waiting, let say goodbye