Double Charge - still no contact

I've been trying to contact Prime Loans on the number provided to now avail. I've emailed their accounts and support departments, yet to get a respond of any kind.

Took out a loan and then paid it via a direct payment, however the debit order ran on my account for a second payment. Checked their settlement statement/letter and it confirms that they received 2 payments instead of 1. Don't understand why it's so difficult to get a hold of these people.