Poor support on vehicle finance

I have completed paying off my vehicle that was financed through ABSA vehicle and asset finance. ABSA kept the registration certificate at the time of sale and I was informed that I would receive the certificate when the vehicle was paid off. I've tried to contact ABSA by phone and by email but get no response. I've sent numerous emails with no response other than the automated one and the phone line system won't let me through to talk to someone. Very poor service on the part of ABSA.