1) Using it for 4 hours (incl downtime) and eating up 32Gb is quite a feat.
Putting 'unmetered' in your offer might encourage people to go for the whole mile.
2) If you expect 8MBs (HF?) think again ... HF will never give you more than 6MBs ... onshore or offshore.
3) Regarding the refund it says '7 day' without any restrictions or additional terms. So if it is within 7 days, a full refund should take place.