Poor Terrible Service

we ordered dogfood for my dogs from Takealot who in turn delivered the incorrect item on the 05 June 2020, the driver contact the warehouse who in turn spoke to me over the phone saying they would delivery the dogfood on the 8 June 2020 and collect the incorrect heater they delivered and up until now i keep getting a sms to say they are collecting but not delivering and no-one has contacted me to apologies my wife contact takealot a few times having to wait almost an hour to speak to someone and every time we have been told they would escalate it to some higher to resolve but with no luck its going on for almost a month, so do i sell the heater to buy my dogfood as it seems a takealot does not care about customer service or the heater they delivered incorrectly