VERY BAD SERVICE

My buisness has not been doing well over the past few months due to my ill heath COVID (POTS). I tried calling their call centre near the end of February to make arrangements for my next debit order that was coming off in March. The consultant that took my call said that no arrangement can be made until the debit order is returned and it is too late to stop the debit order. I then waited for them to get back to me and explained that I was expecting fund and will make the payment as soon as possible. They then called me first thing every morning reminding me to pay. I received funds and paid them as promised. I then received a SMS from them as morning that no payment was made. WHY did they not deduct the funds from my account? It is absolutely pointless trying to communicate with them.