Poor customer service

In March I sent Home-Connect a message on their app to advise them that I won't be able to pay and if they could double debit come end of April. For a week no one responded and then a lady called me from their accounts department and we made the arrangement. A day later my internet was cut. I tried to contact them of which I was able to and asked as to what was happening and they told me that I owe them for a month of March. I told them that I made an arrangement with a lady from the accounts department but they said they can't see anything on the system. I was then without internet from March and to April. Come end of April they double debited me. I called them and asked what was happening because I was without internet the whole of April. They tell me that because of their terms and conditions I have to pay for April. I told them that I had no internet for March and April so why are they double debiting. Mid June I get a call from a guy called Mpho who starts the conversation by when am I going to pay them. I explained to him my entire experience through this process of not having internet since March. He also tells me that I have to pay them even though I didn't use their internet because it's a contract. Made a payment arrangement of making 2 payments. He said he will come back to me and I was not shocked when he didn't. I was prepared to pay and not complain but the recent experience I had with another guy called Menzi is the one that made me come here. Menzi sent me an email asking me to pay and I responded to his email stating that I'm willing to pay but it has to be an arrangement. After 2 weeks he calls me telling me that I have to pay. I told him that I responded to his email with a payment arrangement and only then did he check his emails. I made my first payment and he said he will liaise with the accounts department to stop trying to debit my account. Today I see that they debited my account which was not the agreement. I think the company is good but the people that I dealt with give it a bad reputation. Had they done what they were supposed to we would not be in this situation.