Billing on my account

In November 2017 vodacom debited on the 1st of November and then on the 20th of November again and this debit order was send back due to insufficient funds in my account so I called Vodacom and ask why because my debit order date is on the 1st of every month the they said they are going to log a query and get back to me, Vodacom never came back to me so on the 7th or 8th of December I called to aske when is Vodacom going to debit my account because its so late already then they said that its due to the debit order that was taken on the 20th of November so a made an EFT transfer of R1744.98 to pay my account and later on the month my lime was blocked due to being in arrears so I called ans asked why because I did pay then they said they did not receive the proof of payment so I did send but did not hear anything back so I called later again and they said it must be banl statement that I need to send back so on the 4th of January I sent it again because they debited 3528.96 on the 2nd of January 2018 so after sending the statements to someone else got reply that they received it and will allocate the money to my account then I queried if I will be debited in February because I **** like 3 payments for 2 months then they said yes a amount of 1900 so I queried on that why because I paid lig R5842 for 2 months and still no response then I called again today and the line was dropped and now I am fed up with Vodacom

They are fast to call you or blocked yout line if you did not pay but when yoi did and are looking for answers you dont get any

My account references number is I ********** 7