Billing, billing, billing

Since May 2018 I've requested for a later debit order date. Instead they continue to debit on dates prior resulting in unpaids and me being charged extra each month on my subscriptions. Speaking to the call centre and forwarding bank statements is also of no help. Instead you deal with agents who claim to be managers. Their SLA is they would respond withing 72 hours. I'm still waiting on a reply from from the call centre manager Sherine Grove. I hold their incorrect billing responsible for the inconvenience and acclimated charges.