Bad service and insufficient info and no help for after sales

So after receiving bad service from Homechoice I decided to try Teljoy to get new beds. After a few weeks of getting in touch with sales people and ending up with Hope I made the purchase. I should have know better. I was told of a pro rata amount that i had no problem with but took me 2 weeks to find out when and how much i will be debited and told dont worry you will get an sms- I never received an sms so I called on wed 12 dec only to be told i will be debited on the 15/12 this after i told teljoy i need to know so i can make provision now the debit is locked and cant be changed plus they want to debit for jan already after i told hope only on the 27/01 the 2nd one must take place. now im getting sent from pillar to post and no one wants to fix this. I now cancelled the debit order and got a sms to say im now in arrears for a amount that will only get debited tomorrow? and Portia in collections not helping either