Wesbank poor customer service

I've changed banking details and requested a debit order date for a specific date, but they chose to ignore my request. I've emailed them again and asked for feedback. One week later - no feedback. I asked them to cancel my debit order - i'd prefer to rather do EFT payments and stop ALL debit orders. Their non-reply email reply states that feedback would be given within 48 hours.... I am totally disappointed in their customer service and would never recommend them to others or do business with them after this.