Bad Service

I took a contract phone with telkom at the umhlanga Gateway branch, and they missed my debit date not once but twice and they locked my account. I came three times to them asking for assistance since they are the one that don't debit yet the debit date is written and I signed. There billing department hasn't called from the last three visit I gave the branch asking to speak to the billing department and still no call up until this day and when I asked them to call them while I was there, they refused and asked me to call them.