I want my money back

Hellopeter please help me i joined Pioneer debits solution in 2016 this year june i paid up all my account and send them proof of all my payments but they debit on my account again now I'm struggling to get that money back they always tell me stories now i don't know what to do anymore they even refused to give me my certificate now I'm struggling to buy anything please help me to get my money back my no is ***