Incorrect billing and missing eBucks

After multiple phone calls and tickets logged with the team, I have still not had any decent response. This has been going on since taking out my smart device contract in early April, where I have still not had my eBucks or rewards points allocated to my account after being told by the sales person that I will be debited on the 25th of the same months and points allocated there after. Finally after 4 months I have had my smart devices allocated and amount debited, but the amount debited was in excess of my agreement plus I had now had 3 contracts loaded on my profile which is not correct. I demand this be resolved immediately and incorrect fund be refunded as well as my eBucks back dated according to promised timelines.