Supersonic? More like Super-pathetic-Sonic

Trying to change debit orderr, they messed up and ran debit order against old account. Costing me money. Trying to talk to an agent via Whatsapp. After 6 hours, get a message that they are now offline and I should try again tomorrow. Pathetic! I want to cancel, and they are trying to force me to stay on an additional month. Not acceptable!