Still no debit for my tracker after several contacts with Netstar

Acc no: ***7 i have provided Netstar with my banking details for the debit orders. i have contacted them in few different occasions & Till this day, i haven't seen that happening. What kind of a service is this? no one is bothering to call or sms or anything. they are waiting for a claim and they will turn around and say No payments received! this is so frustrating. this is what we call disgusting service! this is a big organization with a big brand but poor service. when i called wanting to cansel the contract, they told me i cant because its a 3year agreement.....honestly!