Are you sure your hbo/max credit was wiped out? I ask because the charge and credit are two separate line items. You should have had a hbo-cinamax-starz for $35 and a seperate line of hbo/max $11.01 credit. Adding starz should not have wiped away the credit unless it expired. As for the $10 charge. You are in the right on that. You definitely should not have been charged if you kept Starz. That other poster is wrong.