Unfortunately I have had a very very poor experience with Scottish Power. I was transferred to Scottish Power in October 2020 following the collapse of Tonik - I was offered a good tariff for the opening period and was promised payment of the Tonik credit balance owed to me from the previous provider. By June I still had not received the credit due to me despite monthly emails to them and I was also contacted to confirm I was being moved to a far more expensive tariff. At this point in time I decided to switch providers and made the switch from 29th June. I received a final bill from Scottish Power asking me to make a payment to them based on my final readings - the bill was valid however I contacted them yet again to confirm I needed the credit balance applied to my account from Tonik Energy. Finally after much pain I got an email confirming everything was sorted and with the Tonik Energy credit allocated to my account I was due a credit from Scottish Power as it was higher than the final Scottish Power bill. I was assured the matter was fully resolved and account settled, closed job done! I received a cheque from Scottish Power in the post as expected. However, a month later after moving to my new provider I have suddenly started receiving new 'Final Bill' reminders and a chase for payment for the entire original value of the Tonik credit. My communications to Scottish Power are met with wall to wall silence, I am being harrassed for payment with emails (sent at 3am), texts and letters and when I finally get through to anyone on the phone they seem powerless to actually fix the situation despite all acknowledging there is clearly an error. Still waiting for a response and resolution as am bewildered how an account closed a month ago can suddenly become reactivated and set to a rather expensive final bill. It appears the Tonik credit was either incorrectly removed from my account at the start of August or fraudulently removed by an internal member of staff. I am at a loss as to which has happened because nobody at Scottish Power has contacted me. So put simply my advice would have to be to avoid Scottish Power. They talk the talk, send lovely surveys about how they want to own the customers query etc etc but they just do not seem to have any interest or urgency in resolving what is clearly an internal issue their end and instead are quite happy to cause customers grief. I hope to get a resolution at some stage but my interactions have given me little faith that I won't now spend months being chased down for a fictional sum of money.