Itunes keeps charging me for purchases I have not made. I check my debit card statememt and I have been robbed clean. It happened once and was refunded, but now three charges in a month and my account has been cleared. Any help?

I have subscribed to Apple music and it is supposed to be free for 3months. I sunscribed in July so itunes should start deducting from my account in October. I keep getting deducted by itunes for no reason and now my account is cleared.

How can I contact itunes from Ghana about the charges on my debit card?

How can I stop these charges?