Pathetic call centre agents

How many more emails do you guys need from me in order to cancel a tax free investment for my late son??I sent emails, i phoned the call centre, transfered around like an idiot and days later. I am getting an email telling me they wont be able to assist me only Customer Care can assist me. Same call centre people that said they cant help me. The debit order has gone off today for a policy i asked to be cancelled a week ago. I am tired, i am hurting and i still need to deal with you guys!!!