Worst ISP ever dealt with

Been with supersonic for 4 months, since month one i had issues nobody could sort out finally cancelled they don't want to release my line talking about activation fees and routers (router I understand because that must go back to them)

I struggled a 2 days just to get hold of someone to assist with cancellation, that person told me the manager will contact me (she never did) i finally got hold of her my query still not sorted

I finally received an invoice, want to dispute the invoice was told again someone will contact me still no call back.

Long and short of it, stay away safe yourself some time the worst ISP i ever dealt with.