Really wish I could give NO stars! We were customers of Truetelecom, but when our contract was coming to an end in December 2017, we were told that they were about to cease trading and couldn't continue to supply us - so we switched to TalkTalk. However, we kept getting invoices form Onecom and no matter how many times we phoned and wrote to explain and dispute the alleged debt, the invoices and reminders kept coming and then the threatening phone calls started. Finally, yesterday, after a year of persistent threats and time wasting, we have received an ''invoice'' (nearing a totally incorrect postal address), which is actually a credit note for the alleged debt. The covering e-mail contains no apology or explanation and is totally inappropriate in that it refers to the attachment as if it is, indeed, a monthly invoice due for payment. Terrible company - and the Trustpilot rating is just further indication that this is NOT an independent site and reviews are selectively vetted to give a biased assessment of the companies which support and finance Trustpilot.