Top up revert + datapack cancel

Hi !

1. I accidentally clicked top up of 10Euros which I want to revert. Can you please cancel this top up ? 

2. The data pack which I bought last month shouldn’t be looped and I terminated immediately. Its due for SEPA debit in 3 days. Can you ensure that money won’t be debit for terminated pack. 
3. What’s my current active tariff ? 
4. How can I cancel SEPA direct debit and pay manually every month ?