[Resolved]  Airtel Postpaid — Online bill payment and customer service sucks !!!

Airtel online bill payment as well as customer service sucks big time...
I had paid my postpaid bill online thru credit card. I did not print/save my transaction ID.
My credit card statement reflects the bill payment. Also, I get a email from my credit card bank confirming the transaction.
After few days I start getting msgs from airtel saying my bill is overdue... blah blah blah...
I speak to customer care... they dont bother to understand me or extend any further help.
I keep getting msgs for payment of the bill. Frustrating...and since I am on roaming... I also have to pay for calling customer care...
Things start getting worse... airtel billing department starts calling me about my unpaid bill. what the [censored] ! forget about the bill payment made on time... I have to bear the cost of incoming calls from airtel themself... such a crap customer service...
I am definitely switching to vodafone... dont know if vodafone service is good... but I have to teach airtel a lesson by just throwing their sim card on their [censored]in face !