Recommendation please for the best company for landline calls to Germany, Switzerland, Austria, Sweden etc

[merliauds]

Hi

I need to make cheap, reliable and good quality calls to the rest of Europe. The duration of the calls would be an hour or thereabouts. ( I teach English!).

I already have an internet deal (including unlimited calls via the internet connection) with FT but I need to make landline calls.

I do have a landline, but the cost of calls from this is prohibitive. I've tried some of the cheap suppliers but the quality has been dreadful - OK for family and friends, but not for business!

Any advice or recommendations would be much appreciated.