Deposits via Mtn Momo

I've been requesting assistance from Betway SA for the past 6 months but haven't received any. I need assistance with two deposits that I've mistakenly deposited into my second cellphone number which isn't registered with Betway. I made the deposits via the MTN Momo platform on two occasions and I have proof of the transactions,I also have proof that the cellphone number is my number. I've emailed,chatted on Facebook and on Betway live chat but still haven't received any resolution