Accounts department and customer service is very poor.

I have changed banking details and made an online payment on the 1st of September because my debit order bounced. I e-mailed the proof of payment to Home-connect. I have tried for more than a week to contact them but they don't answer their phones. They didn't answer my e-mails either. Finally I got through yesterday and they asked me to send the proof of payment again. They acknowledged the receict of payment and promised that they won't disconnect my internet. Today I got home and find that my internet is disconnected. The customer service is very poor. I tried to phone again this afternoon but nobody picks up the phone. Really dissapointing.