Things started OK with XLN, then after months of technical faults we had to upgrade to fibre as we were offline A LOT.
They put us on to a promo rate for 12 months, and agreed our contract would end after this. Needless to say they then started to charge the full amount after 10 months, and argued they were right.
I provided evidence and proved they were wrong, which they have now accepted 3 times. Always promising a credit note - which just never happens. They have wasted so much of my time, and even contacting the directors office I'm still being ignored.
They owe us money, and they are simply witholding it with no explanation.
Avoid completely - they are not good for small businesses - and you would be better opting with a more reputable provider.