Having been overcharged by EIR for €250 which I was assured wouldn't happen. I was in touch with the EIR Customer support and was assured that it would be credited. But of course when I received my bill I wasn't credited. Was again "assured" that I wouldn't be charged the €250 by direct debit. So I asked for either a copy of the credit note or an email stating that I wouldn't be changed. Or failing that to speak to a manager or supervisor. The customer service person refused and Hung up. I will be calling again.