National Highways Authority Of India [NHAI] — Fastag charges wrongly debited

I am highly frustrated with Fastag service. I am regularly using NE1 (Ahmedabad-Vadodara expressway). Since, so many days I have noticed that I am not getting benefit of return journey fare. The return journey fare is being debited wrongly. I have raised so many complaint on ICICI Fastag however, the issue is not resolved. I have called on 1033 NHAI and the reply is "NHAI does not responsible for toll charges debits". I have called on ICICI fastag customer care also and the reply is "ICICI fastag is just service provider and the amount deduction is responsibility of NHAI". So, My issue is not being solved and I am losing my money.