Not happy with RCS Service - I'm being charged interests that i dont know.

I have issue with RCS and they're not taking it serious. I bought at Game only with my card but they statement comes with the interest for Telkom Airtime from Glocell. This is the second month now. I reported it, they checked and said no transaction was done on my account. Well I also dont see any transaction but whey am i charged interest for Glocell Airtime every month. I never bought anything at Glocell.

Please cancell those interests I cant be paying what i dont know every month. I'm glad their App is showing full details. The pdf statement the they are email us doesnt show Glocell, it just show the interest charged only.